2-chloro-4-fluoro-3-methylbenzonitrile

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-chloro-4-fluoro-3-methyl-benzonitrile (500 mg, 2.95 mmol), (1R,2S)-2-aminocyclohexanol hydrochloride (671 mg, 4.42 mmol, Small Molecules, Inc.) and sodium bicarbonate (991 mg, 11.8 mmol) in DMSO (14.7 mL), and water (2.1 mL) is heated at 130° C. for 48 h. After cooling to room temperature, the mixture is diluted with 1 N HCl and extracted twice with EtOAc. The organic layers are combined, dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue is purified using radial chromatography, eluting with 2% methanol/dichloromethane to furnish the title compound as an off-white solid (527 mg, 68%). LC-ES/MS m/z 265.2 (M+1). extracted twice with EtOAc dried over sodium sulfate filtered concentrated in vacuo The resulting residue is purified eluting with 2% methanol/dichloromethane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-chloro-4-fluoro-3-methyl-benzonitrile (500 mg, 2.95 mmol), (1R,2S)-2-aminocyclohexanol hydrochloride (671 mg, 4.42 mmol, Small Molecules, Inc.) and sodium bicarbonate (991 mg, 11.8 mmol) in DMSO (14.7 mL), and water (2.1 mL) is heated at 130° C. for 48 h. After cooling to room temperature, the mixture is diluted with 1 N HCl and extracted twice with EtOAc. The organic layers are combined, dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue is purified using radial chromatography, eluting with 2% methanol/dichloromethane to furnish the title compound as an off-white solid (527 mg, 68%). LC-ES/MS m/z 265.2 (M+1). extracted twice with EtOAc dried over sodium sulfate filtered concentrated in vacuo The resulting residue is purified eluting with 2% methanol/dichloromethane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-chloro-4-fluoro-3-methyl-benzonitrile (500 mg, 2.95 mmol), diisopropylethylamine (1.29 mL, 7.37 mmol), and (1S,2R)-2-aminocyclohexanol hydrochloride (670 mg, 4.42 mmol, Acros®) is microwaved using a CEM® microwave at 190° C. for 2 h and 180° C. for 4 h. The mixture is diluted with dichloromethane and washed with 1 N HCl. The aqueous layer is extracted again with dichloromethane. The combined organic phases are dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue is purified using radial chromatography, eluting with 2% methanol/dichloromethane. The isolated product is recrystallized with ether and hexane to yield the title compound as a white solid (231 mg, 29%). LC-ES/MS m/z 265.0 (M+1). is microwaved at 190° C. for 2 h washed with 1 N HCl The aqueous layer is extracted again with dichloromethane The combined organic phases are dried over sodium sulfate filtered concentrated in vacuo The resulting residue is purified eluting with 2% methanol/dichloromethane The isolated product is recrystallized with ether and hexane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-chloro-4-fluoro-3-methyl-benzonitrile (500 mg, 2.95 mmol), diisopropylethylamine (1.29 mL, 7.37 mmol), and (1S,2R)-2-aminocyclohexanol hydrochloride (670 mg, 4.42 mmol, Acros®) is microwaved using a CEM® microwave at 190° C. for 2 h and 180° C. for 4 h. The mixture is diluted with dichloromethane and washed with 1 N HCl. The aqueous layer is extracted again with dichloromethane. The combined organic phases are dried over sodium sulfate, filtered, and concentrated in vacuo. The resulting residue is purified using radial chromatography, eluting with 2% methanol/dichloromethane. The isolated product is recrystallized with ether and hexane to yield the title compound as a white solid (231 mg, 29%). LC-ES/MS m/z 265.0 (M+1). is microwaved at 190° C. for 2 h washed with 1 N HCl The aqueous layer is extracted again with dichloromethane The combined organic phases are dried over sodium sulfate filtered concentrated in vacuo The resulting residue is purified eluting with 2% methanol/dichloromethane The isolated product is recrystallized with ether and hexane

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound is prepared by essentially following the procedure described in Example 1, using rel-(1S,2R,5 S)-2-amino-5-(tert-butyl(diphenyl)silyl)oxy-1-methyl-cyclopentanol (409 mg, 1.1 mmol, Preparation 43) and 2-chloro-4-fluoro-3-methyl-benzonitrile (142 mg, 0.84 mmol). A 0.2 M solution of the crude product in THF is treated with tetrabutylammonium fluoride (1.3 mL, 1.3 mmol, 1.0 M in THF) and stirred at room temperature for 16 h. The mixture is treated with water, concentrated in vacuo and extracted with EtOAc. The organic extracts are dried over magnesium sulfate, filtered, and concentrated. The resulting material is purified on silica gel (25-100% EtOAc/hexanes) to give the title compound as a pale yellow oil (15 mg, 6%). The relative stereochemistry is determined by NMR studies. 1H-NMR (400 MHz, DMSO-d6) δ 7.47 (d, J=8.8 Hz, 1H), 6.78 (d, J=8.8 Hz, 1H), 5.60-5.57 (m, 1H), 4.98 (d, J=4.2 Hz, 1H), 4.68 (s, 1H), 3.73-3.70 (m, 2H), 2.12 (s, 3H), 2.09-2.09 (m, 2H), 1.69-1.67 (m, 1H), 1.52-1.49 (m, 1H), 1.07 (s, 3H). LC-ES/MS m/z 281 (M+1). The title compound is prepared concentrated in vacuo extracted with EtOAc The organic extracts are dried over magnesium sulfate filtered concentrated The resulting material is purified on silica gel (25-100% EtOAc/hexanes)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound is prepared by essentially following the procedure described in Example 1, using rel-(1S,2R,5 S)-2-amino-5-(tert-butyl(diphenyl)silyl)oxy-1-methyl-cyclopentanol (409 mg, 1.1 mmol, Preparation 43) and 2-chloro-4-fluoro-3-methyl-benzonitrile (142 mg, 0.84 mmol). A 0.2 M solution of the crude product in THF is treated with tetrabutylammonium fluoride (1.3 mL, 1.3 mmol, 1.0 M in THF) and stirred at room temperature for 16 h. The mixture is treated with water, concentrated in vacuo and extracted with EtOAc. The organic extracts are dried over magnesium sulfate, filtered, and concentrated. The resulting material is purified on silica gel (25-100% EtOAc/hexanes) to give the title compound as a pale yellow oil (15 mg, 6%). The relative stereochemistry is determined by NMR studies. 1H-NMR (400 MHz, DMSO-d6) δ 7.47 (d, J=8.8 Hz, 1H), 6.78 (d, J=8.8 Hz, 1H), 5.60-5.57 (m, 1H), 4.98 (d, J=4.2 Hz, 1H), 4.68 (s, 1H), 3.73-3.70 (m, 2H), 2.12 (s, 3H), 2.09-2.09 (m, 2H), 1.69-1.67 (m, 1H), 1.52-1.49 (m, 1H), 1.07 (s, 3H). LC-ES/MS m/z 281 (M+1). The title compound is prepared concentrated in vacuo extracted with EtOAc The organic extracts are dried over magnesium sulfate filtered concentrated The resulting material is purified on silica gel (25-100% EtOAc/hexanes)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The title compound is prepared by essentially following the procedure as described in Example 1 using (3R,4R)-4-(tert-butyl(dimethyl)silyl)oxytetrahydrofuran-3-amine (Preparation 36) and 2-chloro-4-fluoro-3-methyl-benzonitrile. The crude product is purified on silica gel using 40-70% EtOAc/hexanes. The isolated product is dissolved in THF to make a 0.5 M solution. TBAF (2.0 mL, 2 mmol, 1 M solution in THF) is added and stirred at room temperature for 16 h. The solution is concentrated in vacuo, EtOAc is added, and the solution is washed with water (2×). The organic portion is dried over magnesium sulfate, filtered, and concentrated. The residue is purified by reverse phase chromatography on silica-bound C18 using 15-95% acetonitrile/water+0.1% formic acid. Fractions containing the title compound are concentrated in vacuo to remove acetonitrile, then extracted with EtOAc. The organics are dried over magnesium sulfate and concentrated in vacuo to give the title compound as a white solid (134 mg, 19%). 1H-NMR (400 MHz, DMSO-d6) δ 7.53 (d, J=8.7 Hz, 1H), 6.73 (d, J=8.8 Hz, 1H), 5.60-5.56 (m, 1H), 5.53 (d, J=4.9 Hz, 1H), 4.33-4.29 (m, 1H), 4.05-3.99 (m, 2H), 3.92 (dd, J=4.6, 9.6 Hz, 1H), 3.63 (dd, J=2.4, 9.5 Hz, 1H), 3.53-3.50 (m, 1H), 2.19 (s, 3H). LC-ES/MS m/z 253 (M+1). The title compound is prepared The crude product is purified on silica gel using 40-70% EtOAc/hexanes The isolated product is dissolved in THF The solution is concentrated in vacuo, EtOAc is added the solution is washed with water (2×) The organic portion is dried over magnesium sulfate filtered concentrated The residue is purified by reverse phase chromatography on silica-bound Fractions containing the title compound are concentrated in vacuo to remove acetonitrile extracted with EtOAc The organics are dried over magnesium sulfate concentrated in vacuo