Binap, (A+-)- → N-[(1S,2S)-2-[(5-Bromopyridin-2-yl)amino]cyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide

Participants

Reaction Conditions

Reaction Steps

A mixture of N-[(1S,2S)-2-aminocyclopentyl]-2-(2H-1,2,3-triazol-2-yl)benzamide hydrochloride (Intermediate 4; 300 mg, 0.98 mmol), 5-bromo-2-chloropyridine (CAS number 53939-30-3; 225 mg, 1.17 mmol), sodium tert-butoxide (150 mg, 1.56 mmol), BINAP (24 mg, 0.039 mmol) and tris(dibenzylideneacetone)dipalladium(0) (18 mg, 0.019 mmol) in toluene (4 ml) was heated at 85° C. overnight. The mixture was partitioned between ethyl acetate (10 ml) and water (10 ml). The aqueous layer was further extracted ici with ethyl acetate (3×20 ml). The combined organics were washed with water (2×20 ml), filtered through a hydrophobic frit and concentrated in vacuo. The crude product was purified by column chromatography (silica, 0-100% ethyl acetate/petrol) to afford the title compound.

Provenance & Evidence