1,1-difluoropropan-2-one

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

Procedure: 1-(4-Chloro-2-hydroxyphenyl)ethanone (8.07 g, 47.3 mmol), MeOH (81 mL), 1,1-difluoroacetone (4.89 g, 52.0 mmol), and pyrrolidine (4.30 ml, 52.0 mmol) were stirred at ambient temperature for 45 hours, at 35° C. for 7 hours, then at 50° C. for 3 hours. The reaction mixture was concentrated, diluted with MTBE (75 mL), then washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (9.78 g, 39.7 mmol, 84%) as a brown oil. MS (DCI/NH3) m/z 264 (M+NH4)+. The reaction mixture was concentrated diluted with MTBE (75 mL) washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL) The organic portion was dried (Na2SO4) filtered concentrated

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

Procedure: 1-(4-Chloro-2-hydroxyphenyl)ethanone (8.07 g, 47.3 mmol), MeOH (81 mL), 1,1-difluoroacetone (4.89 g, 52.0 mmol), and pyrrolidine (4.30 ml, 52.0 mmol) were stirred at ambient temperature for 45 hours, at 35° C. for 7 hours, then at 50° C. for 3 hours. The reaction mixture was concentrated, diluted with MTBE (75 mL), then washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (9.78 g, 39.7 mmol, 84%) as a brown oil. MS (DCI/NH3) m/z 264 (M+NH4)+. The reaction mixture was concentrated diluted with MTBE (75 mL) washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL) The organic portion was dried (Na2SO4) filtered concentrated

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

Procedure: 1-(4-Chloro-2-hydroxyphenyl)ethanone (8.07 g, 47.3 mmol), MeOH (81 mL), 1,1-difluoroacetone (4.89 g, 52.0 mmol), and pyrrolidine (4.30 ml, 52.0 mmol) were stirred at ambient temperature for 45 hours, at 35° C. for 7 hours, then at 50° C. for 3 hours. The reaction mixture was concentrated, diluted with MTBE (75 mL), then washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (9.78 g, 39.7 mmol, 84% yield) as a brown oil. MS (DCI/NH3) m/z 264 (M+NH4)+. The reaction mixture was concentrated diluted with MTBE (75 mL) washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL) The organic portion was dried (Na2SO4) filtered concentrated

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

Procedure: 1-(4-Chloro-2-hydroxyphenyl)ethanone (8.07 g, 47.3 mmol), MeOH (81 mL), 1,1-difluoroacetone (4.89 g, 52.0 mmol), and pyrrolidine (4.30 ml, 52.0 mmol) were stirred at ambient temperature for 45 hours, at 35° C. for 7 hours, then at 50° C. for 3 hours. The reaction mixture was concentrated, diluted with MTBE (75 mL), then washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (9.78 g, 39.7 mmol, 84% yield) as a brown oil. MS (DCI/NH3) m/z 264 (M+NH4)+. The reaction mixture was concentrated diluted with MTBE (75 mL) washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL) The organic portion was dried (Na2SO4) filtered concentrated

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-(6-bromo-3-methyl-1H-indazol-1-yl)pyrimidin-2-amine (500 mg, 1.64 mmol) in dry THF (5 mL) at −78° C. under an atmosphere of nitrogen, was introduced lithium diisopropylamide (2.1 mL of a 2M solution in THF, 4.11 mmol). After 5 minutes, a solution of 1,1-difluoropropan-2-one (0.4 mL, 4.93 mmol) in dry THF (2 mL) was added. The reaction mixture was warmed to RT after 20 minutes at −78° C. After 30 minutes at RT, the reaction mixture was quenched (5 mL of sat. aq. ammonium chloride) and concentrated in vacuo. The residue was diluted with DCM (10 mL), washed with water (2 mL) and the organic extract dried (Na2SO4), filtered and concentrated in vacuo. Purification of the residue by flash chromatography (Biotage, elution with DCM containing a 1-12% gradient of MeOH) furnished the title compound as a yellow solid: 1H NMR (500 MHz, CDCl3) delta 1.36 (3H, s), 3.19 (1H, d, J=15.1 Hz), 3.34 (1H, d, J=14.9 Hz), 3.40 (1H, s), 5.17 (2H, s), 5.67 (1H, t, J=56.3 Hz), 7.24 (1H, d, J=8.5, 1.5 Hz), 7.45 (1H, dd, J=8.5, 1.5 Hz), 7.61 (1H, d, J=8.5 Hz), 8.32 (1H, d, J=5.6 Hz), 9.00 (1H, d, J=1.4 Hz); LC-MS: m/z=+397.90/399.90 (M+H)+. After 30 minutes at RT the reaction mixture was quenched (5 mL of sat. aq. ammonium chloride) concentrated in vacuo The residue was diluted with DCM (10 mL) washed with water (2 mL) the organic extract dried (Na2SO4) filtered concentrated in vacuo Purification of the residue by flash chromatography ( Biotage, elution with DCM containing a 1-12% gradient of MeOH)

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

Procedure: 1-(4-Chloro-2-hydroxyphenyl)ethanone (8.07 g, 47.3 mmol), MeOH (81 mL), 1,1-difluoroacetone (4.89 g, 52.0 mmol), and pyrrolidine (4.30 ml, 52.0 mmol) were stirred at ambient temperature for 45 hours, at 35° C. for 7 hours, then at 50° C. for 3 hours. The reaction mixture was concentrated, diluted with MTBE (75 mL), then washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL). The organic portion was dried (Na2SO4), filtered, and concentrated to give the title compound (9.78 g, 39.7 mmol, 84%) as a brown oil. MS (DCI/NH3) m/z 264 (M+NH4)+. The reaction mixture was concentrated diluted with MTBE (75 mL) washed with water (40 mL), 2N HCl (2×25 mL), brine (20 mL), 2N NaOH (2×20 mL), and brine (2×20 mL) The organic portion was dried (Na2SO4) filtered concentrated