4-Methylmorpholine → (r)-4,4,4-Trifluoro-n-(1-(4-fluoro-3-isopropoxyphenyl)-1-(3-fluoro-5-(1,1,2,2,-tetrafluoroethoxy) phenyl)-2-phenylethyl)butanamide

To a solution of 4,4,4-trifluorobutyric acid (13 mg, 0.09 mmol) in DCM (0:8 mL) was added (benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (52 mg, 0.1 mmol), (R)-1-(4-fluoro-3-isopropoxyphenyl)-1-(3-fluoro-5-(1,1,2,2-tetrafluoroethoxy)phenyl)-2-phenylethanamine (40 mg, 0.08 mmol), followed by NMM (28 μl, 0.25 mmol). The reaction mixture was stirred at room temperature for 16 h, then another 16 h at 60° C. The reaction mixture was diluted with EtOAc (10 mL) and the organic layer was washed with H2O, dried over MgSO4, filtered and concentrated. The residue was purified by preparative HPLC Phenomenex Luna C18 column, 30×50 mm eluting with 10-90% ACN/H2O over 10 minutes containing 0.1% TFA; 40 mL/min, monitoring at 220 nm; 40-100% ACN (90% in water, 0.1% TFA) gradient over 10 min with flow rate 40 mL/min and UV detection at 220 nm. (R)-4,4,4-trifluoro-N-(1-(4-fluoro-3-isopropoxyphenyl)-1-(3-fluoro-5-(1,1,2,2,-tetrafluoroethoxy)phenyl)-2-phenylethyl)butanamide (Example 312) was isolated as a lyophillate (27 mg, 55% yield). LCMS: RT=2.15 min [M+H] 608.2 (2 min Phenomenex Luna C18 column, 4.6×30 mm eluting with 10-90% MeOH/H2O over 2 minutes containing 0.1% TFA; 5 mL/min, monitoring at 220 nm); HPLC: RT=3.79 min, Purity 100% (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% ACN/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm); 1H NMR (400 MHz, CDCl3) δ ppm 1.18 (d, J=6.05 Hz, 3H), 1.24 (d, J=6.05 Hz, 3H), 2.34-2.48 (m, 2H), 2.51-2.61 (m, 2H), 3.79 (d, J=13.19 Hz, 1H), 3.98 (d, J=13.19 Hz, 1H), 4.29-4.39 (m, 1H), 6.12-6.44 (m, 1H), 6.67-6.82 (m, 4H), 6.91-7.07 (m, 4H), 7.10-7.19 (m, 3H), 8.29 (s, 1H).

1. customanother 16 h
2. customat 60° C
3. washthe organic layer was washed with H2O
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe residue was purified by preparative HPLC Phenomenex Luna C18 column, 30×50 mm
8. washeluting with 10-90% ACN/H2O over 10 minutes
9. additioncontaining 0.1% TFA
10. wait40-100% ACN (90% in water, 0.1% TFA) gradient over 10 min with flow rate 40 mL/min and UV detection at 220 nm

ORD record

ord-578476b0870046ab8f3efb31d1a6fbc4

Source dataset

uspto-grants-2010_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07790770B2