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Structure of 5437-45-6
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Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
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CAS No. : | 5437-45-6 |
Formula : | C9H9BrO2 |
M.W : | 229.07 |
SMILES Code : | O=C(OCC1=CC=CC=C1)CBr |
MDL No. : | MFCD00000190 |
InChI Key : | JHVLLYQQQYIWKX-UHFFFAOYSA-N |
Pubchem ID : | 62576 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H314 |
Precautionary Statements: | P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P260-P264-P280-P305+P351+P338-P405-P501 |
Class: | 8 |
UN#: | 3265 |
Packing Group: | Ⅲ |
Num. heavy atoms | 12 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.22 |
Num. rotatable bonds | 4 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 50.18 |
TPSA ? Topological Polar Surface Area: Calculated from |
26.3 ?2 |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.27 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.75 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.97 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.43 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.57 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.4 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.1 |
Solubility | 0.182 mg/ml ; 0.000797 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.96 |
Solubility | 0.253 mg/ml ; 0.0011 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.75 |
Solubility | 0.0403 mg/ml ; 0.000176 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 |
-5.74 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 |
0.0 |
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) |
1.7 |
* 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 |
---|---|---|
57% | To a portion of <strong>[22876-16-0]6-methyl-3H-benzooxazol-2-one</strong> (450 mg, 3.02 mmol) in DMF (10 mL) at 23 C. was added K2CO3 (900 mg, 6.51 mmol), and the reaction mixture was stirred for 30 min. Benzyl-2-bromoacetate (909 μL, 5.74 mmol) was slowly added to the reaction mixture, while stirring. After 17 h, the reaction mixture was diluted with ethyl acetate (100 mL) and washed with 1.0 N HCl (100 mL), saturate aqueous NaHCO3 (100 mL), then brine (100 mL), and then was dried (Na2SO4) and concentrated to yield the crude product that was purified by silica gel column chromatography (20-50% EtOAc in hexanes) to afford (6-methyl-2-oxobenzooxazol-3-yl)acetic acid benzyl ester (512 mg, 57%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88.7% | With potassium carbonate; In acetone; at 40℃; | Example 4.; Preparation 2-Ally-3 -(carbomethoxy)benzyloxybenzaldehyde; Reaction Scheme: Experimental:Preparation of 2-Allyl-3-benzyloxybenzaldehyde (3)Table 7.Experimental ProcedureTo a solution of <strong>[79950-42-8]2-allyl-3-hydroxybenzaldehyde</strong> (1) (1.00 g, 0.006 mol) in acetone (20 mL) was added powdered potassium carbonate (3.30 g) and benzyl bromoacetate (2) (1.53 g, 0.006 mol). The reaction mixture was stirred at 40 °C (oil bath temperature) for 5 h. The reaction mixture was checked by tic (Note 1). The reaction was complete. The mixture was filtered, and the filtrate was concentrated in vacuo to get crude viscous liquid. The crude product was purified by silica gel column chromatography using a mixture of ethyl acetate and hexanes (4- 10percent) to get colorless viscous liquid (1.73 g, 88.7percent). 1H NMR (CDC13, 300 Hz) 3.89 (m, 2H), 4.74 (s, 2H), 4.95 - 5.00 (m, 2H), 5.22 (s, 2H), 5.97-6.06 (m, 1H), 6.97 (m, 1H), 7.29-7.34 9m, 6H), 7.54 (m, 1H). Note 1 : Completion of the reaction was monitored by thin layer chromatography (TLC) thin layer silica gel plate; eluent: 10percent ethyl acetate in hexanes. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
3.4 g | With N-ethyl-N,N-diisopropylamine; In acetonitrile; at 20℃; for 4h; | To a suspension (39 mL) of <strong>[138007-24-6]ter<strong>[138007-24-6]t-butyl piperidine-4-carboxylate</strong></strong> (2.6 g) in acetonitrile was added diisopropylethylamine (4.4 mL), subsequently, benzyl bromoacetate (2.0 mL) was added at room temperature in portions, and the mixture was stirred for 4 hours. To the reaction mixture was added water, followed by extraction with ethyl acetate. This was washed with an aqueous saturated sodium chloride solution, dried with anhydrous sodium sulfate, and concentrated. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:3?0:1) to obtain the title compound (3.4 g) having the following physical property values.; TLC: Rf 0.66 (hexane:ethyl acetate=2:1); 1H-NMR (CDCl3): delta 1.44 (s, 9H) 1.68-1.92 (m, 4H) 2.10-2.35 (m, 3H) 2.83-2.96 (m, 2H) 3.26 (s, 2H) 5.16 (s, 2H) 7.25-7.41 (m, 5H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
111 mg; 45 mg | Step 209.2: To a solution of 1,4,6,7-tetrahydro-imidazo[4,5-c]pyridine-5-carboxylic acid tert- butyl ester (279mg) in MeCN (10ml) was added Cs2CO3 (407mg) followed by benzyl bromoacetate (0.2ml). The resulting white suspension was stirred at RT for 48h, diluted with EA and washed with water and brine. The aq. phases were extracted with EA. The combined org. layers were dried (MgS04), filtered off and evaporated to dryness. The residue was purified by CC (Biotage, SNAP 25g cartridge, DCM/MeOH 97/3 for 10CV) to afford 371 mg of oil. The oil was purified by preparative chiral HPLC (I) to afford the two regioisomers, both as mixture of benzyl and ethyl ester that formed during the evaporation of the fractions after HPLC purification: Step 209.3: The Boc protecting group of 1-benzyloxycarbonylmethyl-1,4,6,7-tetrahydro-imidazo[4,5-c]pyridine-5-carboxylic acid tert-butyl ester was cleaved using a method analogous to that of Example 16 step 16.4 to give (4,5,6,7-tetrahydro-imidazo[4,5-c]pyridin-1-yl)-acetic acid benzyl ester. Step 209.4: To a solution of (4,5,6,7-tetrahydro-imidazo[4,5-c]pyridin-1-yl)-acetic acid benzyl ester (176mg) in MeOH was added formaldehyde (36.5% in water, 0.052ml_) followed by NaBH3CN (29mg) and AcOH (0.5ml_). The reaction mixture was stirred at RT overnight. DCM was added and the mixture was washed with sat. NaHCO3. The aq. layer was extracted with DCM, the combined org. layers were dried (MgS04), filtered off and evaporated to dryness. The residue was purified by CC (Biotage, SNAP 10g cartridge, solvent A: DCM; solvent B: DCM/MeOH 8/2; gradient in %B: 25 for 3CV, 25 to 50 over 2CV, 50 for 5CV, 50 to 100 over 3CV, 100 for 2CV) to afford (5-methyl-4,5,6,7-tetrahydro-imidazo[4,5-c]pyridin-1-yl)-acetic acid benzyl ester (39mg, yellow oil). (5-Methyl-4,5,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-2-yl)-acetic acid benzyl ester (1 1 1 mg, colourless oil). LC-MS (B): tR = 0.54min; [M+H]+: 286.16. 1H-NMR (CDCl3): 7.40-7.33 (m, 5H); 7.18 (s, 1 H); 5.21 (s, 2H); 4.89 (s, 2H); 3.50 (s, 2H); 2.86 (t, 2H, 6.0Hz); 2.76 (t, 2H, 5.5Hz); 2.49 (s, 3H). Roesy signal seen between CH2 at 4.89ppm and CH at 7.18ppm. (5-Methyl-4,5,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-1 -yl)-acetic acid benzyl ester (45mg, pale yellow solid). LC-MS (B): tR = 0.54min; [M+H]+: 286.16. 1H-NMR (CDCl3): 7.40-7.33 (m, 6H); 5.21 (s, 2H); 4.85 (s, 2H); 3.47 (s, 2H); 2.75 (t, 2H, 6.0Hz); 2.67 (t, 2H, 5.5Hz); 2.49 (s, 3H). Roesy signal seen between CH2 at 4.85ppm and CH2 at 2.67ppm. Step 215.2: The final compound was prepared using a method analogous to that of Example 14 step 14.2, (5-methyl-4,5,6,7-tetrahydro-pyrazolo[4,3-c]pyridin-2-yl)-acetic acid benzyl ester replacing intermediate 14.1 and using MeOH instead of MeOH/AcOH. LC-MS (B): tR = 0.17min; [M+H]+: 196.29. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With potassium carbonate; In N,N-dimethyl-formamide; at 50℃; for 4h; | 10138] A suspension of diethyl 2-t-butyloxycarbonylami- nomalonate (5.0 g), potassium carbonate (3.0 g), and benzyl 2-bromoacetate (5.4 g) in DMF (20 mL) was stirred at 50for 4 hours. The reaction mixture was cooled, and then poured into diluted hydrochloric acid, the mixture was extracted with ethyl acetate, and the extract was washed with saturated brine, and then dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was subjected to silica gel column chromatography, and then purification was performed with n-hexaneethyl acetate (5:1), to obtain the title compound (6.5 g, yield: 85%) as colorless oil.10139] ‘H NMR (CDC13) ? (ppm): 7.32 (5H, m), 6.1 (1H, s), 5.11 (2H, s), 4.21 (4H, m), 3.53 (2H, s), 1.41 (9H, s), 1.22 (6H, t, J=7.i Hz)10140] MS (FAR): mlz 424 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
240 mg | With caesium carbonate; In acetone; at 65℃; for 6h;Sealed tube; | Step 1. A mixture of lH-imidazol-2(3H)-one (100 mg, 1.19 mmol), cesium carbonate (853 mg, 2.62 mmol) and benzyl 2-bromoacetate (0.40 mL, 2.50 mmol) in acetone (10 mL) was sealed and heated in an oil bath at 65 °C for 6 h. The reaction mixture was filtered and concentrated in vacuo. The residual solid was purified by FCC (80 g silica gel, eluted with gradient 30percent~100percent EtOAc-hexanes) to afford dibenzyl 2,2'-(2-oxo-lH-imidazole- l,3(2H)-diyl)diacetate (240 mg) as a colorless oil. LC-MS retention time = 1.16 min; m/z = 381.3 [M+H]+. (Column: Waters Aquity BEH C18 2.1 X 50 mm 1.7^m-particles; Solvent A = 100percent Water/ 0.05percent TFA; Solvent B = 100percent Acetonitrile/0.05percent TFA; Flow Rate = 0.8 mL/min. Start percent B = 2; Final percent B = 98; Gradient Time = 1.5 minutes; Wavelength = 220 nm). NMR (400 MHZ, CDCh) delta ppm 7.46 - 7.32 (m, 10H), 6.33 (s, 2H), 5.22 (s, 4H), 4.48 (s, 4H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | To a solution ethyl lH-imidazole-2-carboxylate (6 g, 42.8 mmol , prepared as per the procedure depicted in Synthetic communication, 44(7), 968-975, 2014) in DMF (30 ml) at 25-30 °C followed by potassium carbonate (7.1 g, 51.3 mmol) under stirring. After 15 minutes of stirring benzyl bromoacetate (9.8 g, 42.8 mmol) was added drop-wise at same temperature. The progress of reaction was monitored by TLC (methanol: DCM, 1:9). After complete consumption of starting material the reaction mixture was filtered through celite bed to remove insoluble inorganic and poured on to water (150 ml). The aqueous reaction mixture was extracted with dichloro methane (3x 60 ml). The organic extracts were combined and washed with brine (60 ml), dried over anhydrous sodium sulphate. The volatiles were removed under reduced pressure to yield 12 g of yielded ethyl l-[2-(benzyloxy)-2-oxoethyl]-lH-imidazole-2-carboxylate in 97percent yield. |
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