3,3,3-trifluoropropanal

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

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

Procedure: To a solution of 2-N-methyl-2-N-phenyl-6-{5-[(2S)-pyrrolidin-2-yl]-1,2,4-oxadiazol-3-yl}-1,3,5-triazine-2,4-diamine hydrochloride (Example 438, 0.2 g, 0.535 mmol) in DCE (5 mL) was added sodium acetate (0.07 g, 0.8 mmol) and 3,3,3-trifluoropropanal (0.12 g, 1.070 mmol) and the mixture was stirred for 1 h at room temperature. Sodium triacetoxyborohydride (0.17 g, 0.8 mmol) was added and the reaction mixture was stirred for 2 h at room temperature. DCM was added and the mixture was washed with saturated aq. sodium bicarbonate, and then brine. The organic layer was dried over sodium sulfate and concentrated under vacuum. The residue was purified by FCC, eluting with 20-100% EtOAc in heptane to afford the title compound (0.045 g, 19%). the reaction mixture was stirred for 2 h at room temperature the mixture was washed with saturated aq. sodium bicarbonate The organic layer was dried over sodium sulfate concentrated under vacuum The residue was purified by FCC eluting with 20-100% EtOAc in heptane

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

Procedure: 6-[5-(Azetidin-3-yl)-1,2,4-oxadiazol-3-yl]-2-N-methyl-2-N-phenyl-1,3,5-triazine-2,4-diamine (Intermediate 149, 85 mg, 0.26 mmol), 3,3,3-trifluoropropanal (32 μL, 0.28 mmol) and acetic acid (45 μL, 0.78 mmol) were combined in DCE (5 mL) and stirred for 3 h at room temperature. Sodium triacetoxyborohydride (83 mg, 0.39 mmol) was added and the mixture was heated to 70 C for 5 h. The reaction mixture was cooled at room temperature, concentrated under vacuum and purified by preparative HPLC, Method C, to afford the title compound as a white solid (25 mg, 26%). the mixture was heated to 70 C for 5 h The reaction mixture was cooled at room temperature concentrated under vacuum purified by preparative HPLC, Method C

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

Procedure: To a solution of ethyl isonipecotate (3.00 g, 19.1 mmol) in THF (20 mL) and MeOH (20 mL) was added 3,3,3-trifluoropropionaldehyde (2.14 g, 19.1 mmol) and AcOH (1.09 mL, 19.1 mmol) followed by sodium cyanoborohydride (1.20 g, 19.1 mmol). The reaction was allowed to stir for 10 min., at which time the reaction was quenched with water (15 mL) then made basic with NaHCO3 and extracted with EtOAc. The organic layer was washed with brine, dried and concentrated in vacuo to yield a white powder (3.3 g, 68%). Mass Spectrum: Calcd for C11H19NF3O2(M+H): 254. Found: 254. was quenched with water (15 mL) extracted with EtOAc The organic layer was washed with brine dried concentrated in vacuo

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

Procedure: To a solution of (2S,5R)-1-benzyl-2,5-dimethylpiperazine (2.00 g, 7.21 mmol) in THF (10 mL), MeOH (10 mL), and TEA (1.0 mL) was added 3,3,3-trifluoropropionaldehyde (1.62 g, 14.4 mmol) and AcOH (0.826 mL, 14.4 mmol) followed by sodium cyanoborohydride (0.907 g, 14.4 mmol). The reaction was allowed to stir for 2 h, at which time the reaction was quenched with water (15 mL) then made basic with NaHCO3 and extracted with EtOAc. The organic layer was washed with brine, dried and concentrated in vacuo to yield a white powder (2.0 g, 90%). Mass Spectrum: Calcd for C16H24N2F3 (M+H): 301. Found: 301. was quenched with water (15 mL) extracted with EtOAc The organic layer was washed with brine dried concentrated in vacuo

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (S)-1-fluoro-3-(1-(4-fluorophenyl)-1-isocyano-2-phenylethyl)-5-(trifluoromethyl)benzene prepared as described in Procedure 149, 150, 151 and 152 (23 mg, 0.060 mmol) in THF (0.25 mL) was added 3,3,3-trifluoropropanal (0.006 mL, 0.071 mmol) and acetic acid (0.004 mL, 0.071 mmol) followed by a 0.5M solution of zinc chloride in THF (0.142 mL, 0.071 mmol). The reaction mixture was heated at 55° C. for 16 h. The reaction mixture was allowed to cool to room temperature then a solution of 25% NaOMe in MeOH (25 uL) was added and the reaction mixture was heated at 40° C. for 18 h. The reaction mixture was allowed to cool to room temperature then a drop of acetic acid was added and the solvent was removed under a stream of nitrogen. The residue was purified by prep TLC plate, eluting with 25% EtOAc/hexanes, to yield (S)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332A, 7 mg, 22% yield) and (R)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332B, 6 mg, 18% yield) as clear colorless oils. (S)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332A): LCMS: RT=1.82 min [M+H] 518.2 (2 min Phenomenex Luna C18 column, 4.6×30 mm eluting with 10-90% acetonitrile/H2O over 2 minutes containing 0.1% TFA; 5 mL/min, monitoring at 220 nm); NMR: 400 MHz 1H (CDCl3) δ ppm 2.23-2.35 (m, 1H) 2.77-2.88 (m, 2H) 3.73 (d, J=12.75 Hz, 1H) 3.99 (d, J=12.74 Hz, 1H) 4.45 (dd, J=8.57, 4.17 Hz, 1H) 6.61 (d, J=7.47 Hz, 2H) 6.98-7.04 (m, 4H) 7.16-7.28 (m, 6H) 7.69 (s, 1H). (R)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332B): LCMS: RT=1.81 min [M+H] 518.2 (2 min Phenomenex Luna C18 column, 4.6×30 mm eluting with 10-90% acetonitrile/H2O over 2 minutes containing 0.1% TFA; 5 mL/min, monitoring at 220 nm); NMR: 400 MHz 1H (CDCl3) δ ppm 2.23-2.34 (m, 1H) 2.77-2.88 (m, 2H) 3.73 (d, J=12.75 Hz, 1H) 3.99 (d, J=12.74 Hz, 1H) 4.44-4.47 (m, 1H) 6.61 (d, J=7.47 Hz, 2H) 6.98-7.07 (m, 4H) 7.14-7.28 (m, 6H) 7.69 (s, 1H). The stereochemistry of (S)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332A) and (R)-4,4,4-trifluoro-N-((S)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 332B) was assigned arbitrarily. to cool to room temperature the reaction mixture was heated at 40° C. for 18 h to cool to room temperature the solvent was removed under a stream of nitrogen The residue was purified by prep TLC plate eluting with 25% EtOAc/hexanes

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of (R)-1-fluoro-3-(1-(4-fluorophenyl)-1-isocyano-2-phenylethyl)-5-(trifluoromethyl)benzene (22 mg, 0.057 mmol) in CH2Cl2 (0.10 mL) was added 3,3,3-trifluoropropanal (0.010 mL, 0.11 mmol) and pyridine (0.018 mL, 0.23 mmol) followed by trifluoroacetic acid (0.009 mL, 0.11 mmol). The reaction mixture was heated at 40° C. for 4 h. Additional 3,3,3-trifluoropropanal (0.010 mL, 0.11 mmol) was added and heating at 40° C. for was continued for 2 h. The reaction mixture was allowed to cool to room temperature and the solvent was removed under a stream of nitrogen. The residue was purified by prep TLC plate, eluting with 40% Et2O/hexane, to yield (S)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329A, 11 mg, 36% yield) and (R)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329B, 11 mg, 36% yield) as clear colorless oils. (S)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329A): LCMS: RT=1.81 min [M+H] 518.2 (2 min Phenomenex Luna C18 column, 4.6×30 mm eluting with 10-90% acetonitrile/H2O over 2 minutes containing 0.1% TFA; 5 mL/min, monitoring at 220 nm); NMR: 400 MHz 1H (CDCl3) δ ppm 2.24-2.36 (m, 1H) 2.81-2.91 (m, 2H), 3.74 (d, J=13.18 Hz, 1H), 3.99 (d, J=13.18 Hz, 1H), 4.43 (dd, J=10.11, 3.52 Hz, 1H), 6.60 (d, J=7.47 Hz, 2H), 6.99-7.07 (m, 4H), 7.12-7.28 (m, 6H), 7.70 (s, 1H). (R)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329B): LCMS: RT=1.82 min [M+H] 518.2 (2 min Phenomenex Luna C18 column, 4.6×30 mm eluting with 10-90% acetonitrile/H2O over 2 minutes containing 0.1% TFA; 5 mL/min, monitoring at 220 nm); NMR: 400 MHz 1H (CDCl3) δ ppm 2.23-2.35 (m, 1H), 2.77-2.88 (m, 2H), 3.73 (d, J=12.75 Hz, 1H), 3.99 (d, J=12.74 Hz, 1H), 4.45 (dd, J=8.35, 3.95 Hz, 1H), 6.61 (d, J=7.47 Hz, 2H), 6.98-7.04 (m, 4H), 7.16-7.28 (m, 6H), 7.69 (s, 1H). The stereochemistry of (S)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329A) and (R)-4,4,4-trifluoro-N—((R)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-1-(4-fluorophenyl)-2-phenylethyl)-2-hydroxybutanamide (Example 329B) was assigned arbitrarily. heating at 40° C. to cool to room temperature the solvent was removed under a stream of nitrogen The residue was purified by prep TLC plate eluting with 40% Et2O/hexane

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

Procedure: To a stirred solution of 4-(4-amino-6-bromo-1H-benzimidazol-1-yl)-N-cyclopropyl-2-methylbenzamide (5.00 g, 12.98 mmol) in DCE at rt was added 3,3,3-trifluoropropanal (4.36 g, 38.93 mmol, 3 eq), sodium triacetoxy borohydride (13.75 g, 64.89 mmol, 5 eq) and acetic acid (14.9 mL, 259.56 mmol, 20 eq) and the mixture was stirred for overnight. Water and DCM was added, and the organic phase was separated and washed with water After addition of DCM, the organic phase was washed with water and evaporated to yield 4-{6-bromo-4-[(3,3,3-trifluoropropyl)amino]-1H-benzimidazol-1-yl}-N-cyclopropyl-2-methylbenzamide (50%). the organic phase was separated washed with water After addition of DCM the organic phase was washed with water evaporated

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

Procedure: To a stirred solution of 4-(4-amino-6-bromo-1H-benzimidazol-1-yl)-N-cyclopropyl-2-methylbenzamide (5.00 g, 12.98 mmol) in DCE at rt was added 3,3,3-trifluoropropanal (4.36 g, 38.93 mmol, 3 eq), sodium triacetoxy borohydride (13.75 g, 64.89 mmol, 5 eq) and acetic acid (14.9 mL, 259.56 mmol, 20 eq) and the mixture was stirred for overnight. Water and DCM was added, and the organic phase was separated and washed with water After addition of DCM, the organic phase was washed with water and evaporated to yield 4-{6-bromo-4-[(3,3,3-trifluoropropyl)amino]-1H-benzimidazol-1-yl}-N-cyclopropyl-2-methylbenzamide (50%). the organic phase was separated washed with water After addition of DCM the organic phase was washed with water evaporated

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

Procedure: To a stirred solution of tert-butyl 4-amino-6-bromo-1H-benzimidazole-1-carboxylate (5.85 g, 18.74 mmol) in DCE (1000 mL) at rt was added 3,3,3-trifluoropropanal (6.30 g, 56.22 mmol, 3 eq), sodium triacetoxy borohydride (19.86 g, 93.70 mmol, 5 eq) and acetic acid (21.5 mL, 374.79 mmol, 20 eq) and the mixture was stirred for 2 h. Water and DCM was added, and the organic phase was separated and washed with water After addition of DCM (100 mL), the organic phase was washed with water and evaporated to yield 7.63 g tert-butyl 6-bromo-4-[(3,3,3-trifluoropropyl)amino]-1H-benzimidazole-1-carboxylate (81.79%). the organic phase was separated washed with water After addition of DCM (100 mL) the organic phase was washed with water evaporated

Conditions: temp:-30.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-(Benzyloxycarbonyl)-α-phosphonoglycine trimethyl ester and DBU were dissolved in dry methylene chloride (50 mL) and the reaction mixture was chilled to −30° C. 3,3,3-Trifluoropropanal (1 eq) was added dropwise to the chilled and stirred solution and the reaction was allowed to stir for an additional hour at −30° C., and then overnight at ambient temperature. Methylene chloride (ca. 100 mL) was added and the organic phase was washed with 1N HCl (ca. 100 mL), then saturated brine (ca. 100 mL). The organic phase was dried over MgSO4, filtered, and concentrated by rotary evaporation. This crude product was purified by silica gel chromatography with a gradient of 10-30% ethyl acetate in hexanes to yield 2-benzyloxycarbonylamino-5,5,5-trifluoro-pent-2-enoic acid methyl ester as a white, crystalline solid. chilled to stir for an additional hour at −30° C. overnight at ambient temperature the organic phase was washed with 1N HCl (ca. 100 mL) The organic phase was dried over MgSO4 filtered concentrated by rotary evaporation This crude product was purified by silica gel chromatography with a gradient of 10-30% ethyl acetate in hexanes

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

Procedure: A solution of 6.6 g (24.38 mmol) of the hydrochloride prepared in step 16.1 in 110 mL of dichloromethane is cooled in an ice-water bath. 14 mL (243.8 mmol) of glacial acetic acid, 8.19 g (73.14 mmol) of 3,3,3-trifluoropropionaldehyde and 12.9 g (60.95 mmol) of sodium triacetoxyborohydride are successively added portionwise. The mixture is stirred at room temperature for 3 hours and then diluted with dichloromethane, water and aqueous 1N NaOH solution. The aqueous phase is extracted with dichloromethane and the organic phases are combined, dried over Na2SO4, filtered and concentrated under vacuum. 8.4 g of a yellow oil very predominantly containing the expected product are recovered, and are used as obtained in the following step. Quantitative crude yield. The aqueous phase is extracted with dichloromethane dried over Na2SO4 filtered concentrated under vacuum 8.4 g of a yellow oil very predominantly containing the expected product are recovered as obtained in the following step Quantitative crude yield