Binap, (A+-)- → N-[(1S,2S)-4,4-Difluoro-2-{[5-(trifluoromethoxy)pyridin-2-yl]amino}cyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide

Participants

Reaction Conditions

Reaction Steps

To a solution of N-[(1S,2S)-2-amino-4,4-difluorocyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide (Intermediate 46; 50 mg, 0.16 mmol) in dry toluene (1.6 ml) was added 2-bromo-5-(trifluoromethoxy)pyridine (CAS number 888327-36-4; 40 mg, 0.17 mmol), BINAP (10 mg, 0.016 mmol), tris(dibenzylideneacetone)dipalladium(0) (8 mg, 8.74 μmol) and sodium tert-butoxide (22 mg, 0.23 mmol). The reaction was placed under an atmosphere of nitrogen, sealed and heated at 120° C. for 17 hours then partitioned between ethyl acetate and water. The organics were washed with water and brine, dried over sodium sulfate, filtered and concentrated in vacuo. The crude material was purified by column chromatography (silica, 10-70% ethyl acetate/petrol) to afford the title compound.

Provenance & Evidence