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Structure of 2996-92-1
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CAS No. : | 2996-92-1 |
Formula : | C9H14O3Si |
M.W : | 198.29 |
SMILES Code : | CO[Si](OC)(OC)C1=CC=CC=C1 |
MDL No. : | MFCD00025689 |
InChI Key : | ZNOCGWVLWPVKAO-UHFFFAOYSA-N |
Pubchem ID : | 18137 |
GHS Pictogram: |
![]() ![]() ![]() |
Signal Word: | Danger |
Hazard Statements: | H226-H302-H373 |
Precautionary Statements: | P210-P260-P280-P303+P361+P353-P305+P351+P338-P370+P378 |
Class: | 3 |
UN#: | 1993 |
Packing Group: | Ⅲ |
Num. heavy atoms | 13 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 4 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 52.68 |
TPSA ? Topological Polar Surface Area: Calculated from |
27.69 ?2 |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.65 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.96 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.77 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.38 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.11 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.17 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.38 |
Solubility | 0.823 mg/ml ; 0.00415 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.17 |
Solubility | 1.35 mg/ml ; 0.00681 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.89 |
Solubility | 0.256 mg/ml ; 0.00129 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
Yes |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.12 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
1.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
3.46 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | With NHC-Pd(II)-Im; tetrabutyl ammonium fluoride; In toluene; at 120℃; for 3h;Inert atmosphere; | General procedure: Under N2 atmosphere, NHC-Pd(II)-Im 1 (1.0 mol%), dry toluene (2.0 mL), aryl chlorides 2 (0.81 mmol), aryltrimethoxysilanes 3 (2.0 equiv) and TBAF?3H2O (2.0 equiv) were successively added into a Schlenk reaction tube. Then the tube was placed in a 120 C oil bath and stirred for 3 h. The mixture was then allowed to cool to room temperature, diluted with ethyl acetate and washed with brine, dried over anhydrous Na2SO4, concentrated in vacuo and then purified by flash chromatography to give the pure products 4. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With tetrabutyl ammonium fluoride; caesium carbonate; In 1,4-dioxane; water; at 80℃; for 6h; | General procedure: For catalyst test, in a typical method, 1mmol of aryl halide, 2 mmol of PTMS, 1 mmol of TBAF, 1 mmol of Cs2CO3, 0.3 mol% (0.10 g) of NHC-Pd/SBA-15/IL were mixed to react in 2 mL dioxane:H2O (2:1) at 80C for 8 h afterwards, the reaction mixture was cooled to room temperature and the catalyst was separated by filtration and with DCM. Work-up step was performed by DCM (organic solvent) and distilled water. Then, the organic solution was evaporated and the residue was purified by column chromatography and the product. All obtained products are known and characterized and compared with physical and instrumental methods. |
87% | With TAd-PEPPSI; sodium hydroxide; In 1,4-dioxane; water; at 80℃; for 4h;Inert atmosphere; | General procedure: Under nitrogen, a 20mL Schlenk tube containing a stirring bar was charged with sodium hydroxide (120mg, 3.0mmol), TAd-PEPPSI (6.4mg, 0.010mmol), aryl bromide 5 (1.0mmol), trimethoxyphenylsilane 6 (224μL, 1.2mmol) and 1,4-dioxane (4mL)/H2O (2mL). The mixture was stirred at 80C for 4h. After the mixture was allowed to cool to room temperature, water (5mL) was added and the mixture was extracted with three portions of ethyl acetate (15mL), dried with MgSO4, and filtered. The solvent was removed under reduced pressure to give the crude product. The product was isolated by PTLC (hexane/ethyl acetate). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resins B1-B6 were prepared in the following manner. Phenyltrimethoxysilane and/or phenylmethyldimethoxysilane, catalyzed by trifluoromethanesulfonic acid (TFMSA), were hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. Hexamethyldisiloxane (HMDS) and additional water were added and the mixture heated to 50-60° C. optionally followed by distillative removal of volatiles. gamma-Aminopropyltriethoxysilane (APTES) or gamma-aminopropyldiethoxymethylsilane (APDEMS) were added along with additional water, followed by distillative removal of alcohol. Toluene, additional water and optionally a catalytic amount of 1.0 N aqueous potassium hydroxide were added and water removed via azeotrope. If added the hydroxide was neutralized with 1.0 N aqueous HCl, and water again removed via azeotrope. The mixture was filtered and solvent removed. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resins B1-B6 were prepared in the following manner. Phenyltrimethoxysilane and/or phenylmethyldimethoxysilane, catalyzed by trifluoromethanesulfonic acid (TFMSA), were hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. Hexamethyldisiloxane (HMDS) and additional water were added and the mixture heated to 50-60° C. optionally followed by distillative removal of volatiles. gamma-Aminopropyltriethoxysilane (APTES) or gamma-aminopropyldiethoxymethylsilane (APDEMS) were added along with additional water, followed by distillative removal of alcohol. Toluene, additional water and optionally a catalytic amount of 1.0 N aqueous potassium hydroxide were added and water removed via azeotrope. If added the hydroxide was neutralized with 1.0 N aqueous HCl, and water again removed via azeotrope. The mixture was filtered and solvent removed. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resins B1-B6 were prepared in the following manner. Phenyltrimethoxysilane and/or phenylmethyldimethoxysilane, catalyzed by trifluoromethanesulfonic acid (TFMSA), were hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. Hexamethyldisiloxane (HMDS) and additional water were added and the mixture heated to 50-60° C. optionally followed by distillative removal of volatiles. gamma-Aminopropyltriethoxysilane (APTES) or gamma-aminopropyldiethoxymethylsilane (APDEMS) were added along with additional water, followed by distillative removal of alcohol. Toluene, additional water and optionally a catalytic amount of 1.0 N aqueous potassium hydroxide were added and water removed via azeotrope. If added the hydroxide was neutralized with 1.0 N aqueous HCl, and water again removed via azeotrope. The mixture was filtered and solvent removed. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resins B1-B6 were prepared in the following manner. Phenyltrimethoxysilane and/or phenylmethyldimethoxysilane, catalyzed by trifluoromethanesulfonic acid (TFMSA), were hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. Hexamethyldisiloxane (HMDS) and additional water were added and the mixture heated to 50-60° C. optionally followed by distillative removal of volatiles. gamma-Aminopropyltriethoxysilane (APTES) or gamma-aminopropyldiethoxymethylsilane (APDEMS) were added along with additional water, followed by distillative removal of alcohol. Toluene, additional water and optionally a catalytic amount of 1.0 N aqueous potassium hydroxide were added and water removed via azeotrope. If added the hydroxide was neutralized with 1.0 N aqueous HCl, and water again removed via azeotrope. The mixture was filtered and solvent removed. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resins B1-B6 were prepared in the following manner. Phenyltrimethoxysilane and/or phenylmethyldimethoxysilane, catalyzed by trifluoromethanesulfonic acid (TFMSA), were hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. Hexamethyldisiloxane (HMDS) and additional water were added and the mixture heated to 50-60° C. optionally followed by distillative removal of volatiles. gamma-Aminopropyltriethoxysilane (APTES) or gamma-aminopropyldiethoxymethylsilane (APDEMS) were added along with additional water, followed by distillative removal of alcohol. Toluene, additional water and optionally a catalytic amount of 1.0 N aqueous potassium hydroxide were added and water removed via azeotrope. If added the hydroxide was neutralized with 1.0 N aqueous HCl, and water again removed via azeotrope. The mixture was filtered and solvent removed. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Silicone Resin C1 was prepared in the following manner. A mixture (amounts in Table 1) of phenyltrimethoxysilane, phenylmethyldimethoxysilane, and gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in xylenes and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was reacted with trimethylethoxysilane, additional xylenes and additional water, followed by azeotropic removal of water. To a 177.0 gram portion of this reaction mixture, 19.3 grams of additional xylenes and 48.5 grams of colloidal silica dispersion (Ludox.(R). HS-40-220 m2/gm Grace Davison (Columbia, Md.)) were added and the water removed via azeotrope. The mixture was filtered and solvent removed to yield 110.6 grams of silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Arninofunctional Silicone Resins A1-A9 were prepared in the following manner. A mixture of phenyltrimethoxysilane, phenylmethyldimethoxysilane, gamma-aminopropyltriethoxysilane (APTES), and/or gamma-aminopropyldiethoxymethylsilane (APDEMS) was optionally dissolved in aromatic solvent and hydrolyzed with deionized water, followed by distillative removal of by-product alcohol. The resulting structure was optionally reacted with trimethylethoxysilane, hexamethyldisilazane (HMDZ), APDEMS and/or dimethyldimethoxysilane, additional solvent and additional water added, a catalytic amount of aqueous potassium hydroxide optionally added and the water removed via azeotrope. The hydroxide, if added, was neutralized with aqueous HCl or acetic acid, and water removed again via azeotrope. The mixture was filtered and solvent removed to yield silicone resin product. The amount of each ingredient is shown in Table 1 below. The final aminofunctional silicone resin composition, wt percent phenyl (Ph), wt percent R2SiO (D), wt percent Me2SiO (D(Me2)), mole percent amino (-CH2CH2CH2NH2), wt percent amine (-NH2), and -NH- (Amine H) equivalent weight are shown in Table 2 below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Aminofunctional Siloxane Resin E1 was prepared in the following manner: A mixture of 119.6 g phenyltrimethoxysilane and 218.8 g phenylmethyldimethoxysilane were hydrolyzed with 67.3 g dilute aqueous HCl (0.02 N), followed by distillative removal of by-product methanol. The hydrolyzate was dissolved in 119.0 g toluene followed by azeotropic removal of residual water and subsequently reacted with 34.4 g cyclosilazane (1,1,2,4-Tetramethyl-1-sila-2-azacyclopentane). 5.1 g dilute aqueous KOH (1.0 N) was added and the mixture heated to reflux for three hours. The mixture was neutralized with 5.2 g aqueous HCl (1.0 N) dried via azeotropic distillation, filtered and solvent removed to yield 265.1 g of the silicone resin E1 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
84% | With NHC-Pd(II)-Im; tetrabutyl ammonium fluoride; In toluene; at 120℃; for 3h;Inert atmosphere; | General procedure: Under N2 atmosphere, NHC-Pd(II)-Im 1 (1.0 mol%), dry toluene (2.0 mL), aryl chlorides 2 (0.81 mmol), aryltrimethoxysilanes 3 (2.0 equiv) and TBAF?3H2O (2.0 equiv) were successively added into a Schlenk reaction tube. Then the tube was placed in a 120 C oil bath and stirred for 3 h. The mixture was then allowed to cool to room temperature, diluted with ethyl acetate and washed with brine, dried over anhydrous Na2SO4, concentrated in vacuo and then purified by flash chromatography to give the pure products 4. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
200.2 g | In tetrahydrofuran; at 60 - 70℃; for 1h;Inert atmosphere; | [0047] Comparative Example 1 500 mL of a phenyl magnesium chloride solution (produced by Sigma-Aldrich, 32 percent by weight tetrahydrofuran solution, 2 mol/L, 1.0 mol equivalents of phenyl magnesium chloride) was loaded into a 1 L 4-neck flask equipped with a nitrogen gas feed tube, thermometer, Dimroth type condenser, and dripping funnel. While the mixture was stirred, the mixture was heated to 60C. Thereafter, 193.8 g (1.0 mol) of phenyltrimethoxysilane was added dropwise at 60 to 70C. After completion of trickling addition, the mixture was further stirred for 1 h at 70C, and then was cooled to 30C. The generated slurry was suction filtered using glass filter paper GC90 manufactured by Advantec, and the byproduct methoxymagnesium bromide was removed by filtration. The tetrahydrofuran was removed by distillation using an evaporator to obtain 200.2 g of the product. The product was confirmed by MS-GC to be diphenyldimethoxysilane(66.1 % purity). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
232 g | With magnesium; In tetrahydrofuran; toluene; at 60 - 70℃; for 1h;Inert atmosphere; | [0048] Practical Example 1 24.3 g (1.0 mol) of flake-like magnesium produced by Wako Pure Chemical Industries, Ltd. (1.74 specific gravity), 54.0 g (0.75 mol) of tetrahydrofuran produced by Tokyo Chemical Industry Co., Ltd., 92.1 g (1.0 mol) of toluene produced by Tokyo Chemical Industry Co., Ltd., and 198.3 g (1.0 mol) of phenyltrimethoxysilane (Z-6126 SILANE) produced by Dow Corning were loaded into a 1 L 4-neck flask equipped with a nitrogen gas feed tube, thermometer, Dimroth type condenser, and dripping funnel. While the mixture was stirred, the mixture was heated to 60C. Thereafter, 157.0 g (1.0 mol) of phenyl bromide produced by Sigma-Aldrich was added dropwise at 60 to 70C. After completion of trickling addition, the mixture was further stirred for 1 h, and then was cooled to 30C. The generated slurry was suction filtered using glass filter paper GC90 manufactured by Advantec, and the byproduct methoxymagnesium bromide was removed by filtration. The tetrahydrofuran was removed by distillation using an evaporator to obtain 232.0 g of the product. The product was confirmed by GC-MS to be diphenyldimethoxysilane (86.8% purity). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | With palladium(II) trifluoroacetate; C30H30N4; silver fluoride; In N,N-dimethyl acetamide; at 100℃; for 4h; | General procedure: To a mixture of aryl(trialkoxy)silane(0.20 mmol), AgF (76.6 mg, 0.60 mmol), Pd(TFA)2 (5.0 mg, 0.015 mmol,7.5 mol %), and ligand 1g (6.7 mg, 0.015 mmol, 7.5 mol %) in DMAc (1.0 mL)was added arylcarboxylic acid (0.40 mmol) at room temperature under an atmosphere of air. After the mixture was stirred at 100?or 110?C for 2-8 h, the mixture was diluted with ethyl acetate and water. The organic layer was washed with brine, dried over MgSO4, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (hexane/EtOAc = 20:1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With C14H18Br2N4Pd; sodium hydroxide; In ethylene glycol; at 110℃; for 1h;Schlenk technique; | General procedure: Hiyama reactions were carried out in a 50 mL Schlenk tubein an air atmosphere. Base (2.0 mmol) and phenyltrimethoxysi-lane (1.5 mmol) were weighed and placed directly in the Schlenktube Schlenktube. Next, 5 mL of the solvent (ethylene glycol), 2-bromotoluene(1 mmol, 0.118 mL) and the palladium complex (1 × 10-5mol) wereadded. The Schlenk tube was closed with a rubber stopper, andthe reaction mixture was stirred at 110C. After 1 h, the reac-tor was cooled down and the organic products were extractedwith 3 × 3 + 4 mL of n-hexane (5 min with intensive stirring). Theextracts (10 mL) were GC-FID analyzed (Hewlett Packard 5890)with 0.076 mL of dodecane as an internal standard. The productswere identified by GC-MS (Hewlett Packard 5971A). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
12%; 77% | In toluene; at 80℃; for 2h;Inert atmosphere; Schlenk technique; | In a nitrogen-filled drybox, aryl manganese compound represented by the followingformula into a glass vial (30.0 mg, 0.039 mmol) and the internal standard eicosane (10.0 mg,0.035 mmol) was charged and added toluene 1mL and the. It was prepared in a separate vial Si(OEt) 4 and (16.0mg, 0.077mmol) was added thereto using a toluene 1 mL. The reaction wascarried out with stirring for 24 hours at 100 C. By Shimadzu GC-2010 gas chromatograph,SiPh (OEt) 3 is 80%, SiPh 2 (OEt) 2, it was confirmed that have generated 11%. |