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CAS No. : | 38186-84-4 |
Formula : | C6H5ClFN |
M.W : | 145.56 |
SMILES Code : | ClC1=NC=C(C=C1C)F |
MDL No. : | MFCD04972725 |
InChI Key : | FMPYGEFGXUAAKG-UHFFFAOYSA-N |
Pubchem ID : | 12852014 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.17 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 34.17 |
TPSA ? Topological Polar Surface Area: Calculated from |
12.89 ?2 |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.89 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.28 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.6 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.85 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.88 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.3 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.67 |
Solubility | 0.31 mg/ml ; 0.00213 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.19 |
Solubility | 0.945 mg/ml ; 0.00649 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.29 |
Solubility | 0.0755 mg/ml ; 0.000519 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 |
-5.57 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 |
2.0 |
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) |
1.62 |
* 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 |
---|---|---|
With sodium hydrogencarbonate;palladium diacetate; 1,3-bis-(diphenylphosphino)propane; In methanol; at 20 - 130℃; for 20h; | A. 7-(5 -Fluoro-3 -methylpyridin-2-yl)-N-(5 -(trifluoromethyl)pyrimidin-2-yl)- 1 , 8 -naphthyridin-4- amine (compound 1)1. 2-Acetyl-5-fluoro-3-methylpyridine Dissolve 2-chloro-5 -fluoro-3 -methylpyridine (1.45 g, 0.01 moles) in MeOH (30 mL) at room temperature. Add butylvinylether (3.0 mL) and NaHCO3 (3.0 g) to the reaction mixture and degas with nitrogen for 5 minutes. Add catalyst Pd(OAc)2 (120 mg) and 1,3- bis(diphenylphosphino)propane (360 mg) to the mixture and then heat at 13O0C in a pressure vessel with stirring for 20 hours. Cool the reaction mixture to room temperature and remove the insoluble EPO <DP n="50"/>material by filtration. Wash the solid with MeOH (25 mL) and then add 5.0 mL of 6.0 N aqueous HCl to the filtrate. Stir the mixture at room temperature for 20 hours. Concentrate the reaction mixture under vacuum, dilute it with EtOAc (100 mL), wash the organic layer with aq. Na2CO3 (2 x 50 mL) and dry (MgSO4). Filter the dried extract and concentrate under vacuum to afford crude product as pink oil. Purify the crude product by column chromatography to afford pure product as colorless oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55.2% | To a solution of <strong>[38186-84-4]2-chloro-5-fluoro-3-methylpyridine</strong> D38 (0.50 g, 2.82 mmol) in dry toluene (12.5 ml) were added sodium t-butoxyde (0.462 g, 4.81 mmol), Pd2(dba)3 (0.315 g, 0.344 mmol), BINAP (0.642 g, 1.031 mmol) and benzophenone imine (0.692 ml, 4.12 mmol). The resulting mixture was degassed (3.x.pump/N2) and then heated to 80° C. After 1 h stirring, the mixture was cooled down to room temperature, diluted with Et2O (400 ml) and filtered through a celite pad. Volatiles were evaporated, the resulting oil was dissolved in THF (34 ml) and HCl (1.408 ml of a 2 M aqueous solution, 2.82 mmol) was added. The mixture was stirred at room temperature for 1.5 h, then neutralized with a saturated NaHCO3 aqueous solution and diluted with DCM (200 ml). The inorganic layer was back-extracted with DCM (2.x.50 ml). The collected organic layers were dried (Na2SO4), filtered and evaporated. The residue was purified by flash chromatography on silica gel (Biotage SP4 12M, Cy/EtOAc 60/40). Collected fractions gave the title compound D39 (0.20 g, 1.554 mmol, 55.2percent yield from D38, two steps), as an orange solid. MS: (ES/+) m/z: 127 (M+1). C6H7FN2 requires 126.1H NMR (400 MHz, DMSO-d6) delta(ppm): 7.73 (d, 1H), 7.23 (dd, 1H), 5.60 (bs, 2H), 2.04 (s, 3H). | |
5-Fluoro-3-methyl-2-pyridinamine (DIl): To a solution of <strong>[38186-84-4]2-chloro-5-fluoro-3-methylpyridine</strong> DlO (0.50 g) in dry toluene (12.5 ml) were added sodium t-butoxyde (0.462 g, 4.81 mmol), Pd2(dba)3 (0.315 g, 0.344 mmol), BINAP (0.642 g, 1.031 mmol) and benzophenone imine (0.692 ml, 4.12 mmol). The resulting mixture was degassed (3 x pump/N2) and then heated to 80 0C. After 1 hour stirring, the mixture was cooled down to room temperature, diluted with Et2O (400 ml) and filtered through a celite pad. Volatiles were evaporated, the resulting oil was dissolved in THF (34 ml) and HCl (1.408 ml of a 2 M aqueous solution, 2.82 mmol) was added. The mixture was stirred at room temperature for 1.5 hours, then neutralized with a saturated NaHCO3 aqueous solution and diluted with DCM (200 ml). The inorganic layer was back- extracted with DCM (2 x 50 ml). The collected organic layers were dried (Na2SO4), filtered and evaporated. The residue was purified by flash chromatography on silica gel (Biotage SP4 12M column, Cy/EtOAc 60/40). Collected fractions gave the title compound DIl (0.20 g) as an orange solid. MS: (ES/+) m/z: 127 (M+l). C6H7FN2 requires 126. 1H NMR (400 MHz, DMSO-J6) delta ppm: 7.73 (d, 1 H), 7.23 (dd, 1 H), 5.60 (bs, 2 H), 2.04 (s, 3 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To an ice-cooled mixture of the crude mesylate (4.53 g, 18.90 mmol) in THF (180 ml), LAH (18.90 ml of a 1.0 M solution in THF, 18.90 mmol) was added dropwise and the reaction was stirred for 1 h. A 2 M HCl aqueous solution (80 ml) was added, the resulting mixture stirred for 30 min and then DCM (400 ml) was added. The organic layer was separated and evaporated to give the title compound D38 (2.28 g, 12.84 mmol, 67.9percent yield from (2-chloro-5-fluoro-3-pyridinyl)methanol, two steps) as a white solid.HPLC (walk-up): rt=3.56 min.1H NMR (400 MHz, DMSO-d6) delta (ppm): 8.31 (d, 1H), 7.86 (dd, 1H), 2.35 (s, 3H). | ||
With lithium aluminium tetrahydride; In tetrahydrofuran;Cooling; | To a -20 0C cooled solution of (2-chloro-5-fluoro-3-pyridinyl)methanol (3.086 g, 19.10 mmol) and TEA (5.32 ml, 38.20 mmol) in anhydrous DCM (180 ml), MsCl (2.233 ml, 28.70 mmol) was added dropwise and the resulting reaction mixture stirred at 0 0C for 30 minutes. Volatiles were evaporated under reduced pressure to afford the desired mesylate (4.53 g) that was used in the next step without further purification. [Mesylate data: MS: (ES/+) m/z: 240 (M+l) and 242 (M+l). C7H7ClFNO3S requires 239]. To an ice-cooled mixture of the crude mesylate (4.53 g, 18.90 mmol) in THF (180 ml), LAH (18.90 ml of a 1.0 M solution in THF, 18.90 mmol) was added dropwise and the reaction was stirred for 1 hour. A 2 M HCl aqueous solution (80 ml) was added, the resulting mixture stirred for 30 minutes and then DCM (400 ml) was added. The organic layer was separated and evaporated to give the title compound DlO (2.28 g) as a white solid. HPLC (walk-up): rt = 3.56 min. 1H NMR (400 MHz, DMSO-J6) delta ppm: 8.31 (d, 1 H), 7.86 (dd, 1 H), 2.35 (s, 3 H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 120℃; for 0.5h;microwave irradiation; | Acid-22: 5-Fluoro-3-methyl-pyridine-2-carboxylic acid; a) 5-Fluoro-3-methyl-pyridine-2-carbonitrile; A soln. of <strong>[38186-84-4]2-chloro-5-fluoro-3-methyl-pyridine</strong> (CAS 38186-84-4, 408 mg, 2.750 mmol), Zn(CN)2 (230 mg, 1.923 mmol) and Pd(PPh3)4 (190 mg, 0.165 mmol) in DMF (8 ml) was stirred at 120 C for 0.5 h in a microwave. The reaction mixture was filtered over hyflo, diluted with TBME and H20 and extracted with brine. The aq. phases were reextracted with TBME, the combined org. phases were dried over Na2S04, filtered and concentrated. Flash chromatography on silica gel (hexane-EtOAc 100:0 to 80:20) yielded the title compound. HPLC: 0.72 min; 1 H NMR (400 MHz, CDCI3): delta 8.42 (d, 1 H), 7.42-7.39 (m, 1 H), 2.61 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
12% | With hydrogenchloride; at 150℃; for 15h;Microwave irradiation; | <strong>[38186-84-4]2-chloro-5-fluoro-3-methylpyridine</strong> (lg, 6.870 mmol) is dissolved in hydrochloric acid(37percent, 20 mL) and the reaction is heated under microwave irradiation at 15000 for15h. The mixture is diluted with water and washed with DCM. The aqueous layer isbasified with NaOH and re-extracted with DCM several times. The organic layer isseparated, dried and evaporated to furnish 5-fluoro-3-methyl-pyridin-2-ol (140 mg,content 74percent, 12percent).UPLC-MS (Method 2): R = 0.50 mmMS (ESI pos): mlz = 128 (M+H)+ |
With hydrogenchloride; water; at 150℃; for 15h;Microwave irradiation; | 10365] <strong>[38186-84-4]2-chloro-5-fluoro-3-methylpyridine</strong> (1 g, 6.870 mmol) is dissolved in hydrochloric acid (37percent, 20 mE) and the reaction is heated under microwave irradiation at 150° C. for 15 h. The mixture is diluted with water and washed with DCM. The aqueous layer is basified with NaOH and reextracted with DCM several times. The organic layer is separated, dried and evaporated to thrnish 5-fluoro-3-methyl-py-ridin-2-ol (140 mg, content 74percent, 12percent).10366] UPEC-MS (Method 2): R=0.50 mm10367] MS (ESI pos): mlz=128 (M+H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
53% | In ethanol; at 145 - 155℃; for 3h;Inert atmosphere; | 2-Chloro-5-fluoro-3-methylpyridine (1 .Og, 6.9 mmol) was added under nitrogen at 20°C to piperazine (3.0 g, 34 mmol) in ethanol (30 ml). The ethanol was partially distilled off and the solution heated at 155 °C (130 °C internal) using an air condenser for one hour and allowed to cool. The reaction was heated for a further 2 hours at 145 °C for complete conversion. The cooled residue was stirred with water (10 ml) to give an orange solution and pale crystalline solid. The product was partitioned between DCM (30 ml) and water (10 ml). The layers were separated and the aqueous was extracted with DCM (4 x 10 ml). The combined organics were concentrated in vacuo and purified via flash column chromatography: elution with 5 column volumes of MTBE removed the starting halide; further elution with 10:4:1 MTBE / MeOH / NH3 (35percent aq) afforded fractions containing product. The fractions were reduced in vacuo to afford the title compound as a yellow oil which crystallised on standing (706 mg, 53 percent).1H NIVIR (500 MHz, Methanol-d4) 7.26 (t, J = 9.0 Hz, 1H), 6.59 (dd, J = 9.0, 2.6 Hz, 1H), 3.44? 3.38 (m, 4H), 2.93 ? 2.89 (m, 4H), 2.33 (d, J = 3.0 Hz, 3H). LCMS Method 2 - Tr = 0.98 mm (ES+) (M+H)+ 196 |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62% | LDA solution (2M, 3.85 mL, 7.70 mmol) was added to a cooled solution of <strong>[38186-84-4]2-chloro-5-fluoro-3-methylpyridine</strong> (1.02 g, 7.00 mmol) in THF (22.9 mL) at -78 °C. The reaction was stirred for30 mm, then methyl formate (1 .30 mL, 21.0 mmol) was added and the reaction was stirred fora further 30 minutes. The reaction was quenched by addition of iN HC1 solution (20 mL) andextracted with EtOAc (40 mL). The organic phase was washed with saturated aqueous sodiumchloride, dried over Na2SO4 and evaporated. The crude product was purified by flash silicachromatography, elution gradient 0 to 20percent EtOAc in heptane. Product containing fractions were evaporated to dryness to afford 2-chloro-5 -fluoro-3 -methylisonicotinaldehyde (754 mg, 62percent)as a straw coloured liquid. ?HNMR (500 MHz, CDC13, 27°C) 2.65 (3H, s), 8.33 (1H, s), 10.51 (1H, s). |
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