Triphenylphosphine → (2E)-N-Indol-5-yl-3-[2-(3-pyridylmethyl)-4-(trifluoromethyl)phenyl]prop-2-enamide

Participants

Reaction Conditions

Reaction Steps

A mixture of (2E)-3-[2-bromo-4-(trifluoromethyl)phenyl]-N-indol-5-ylprop-2-enamide, Example 97, (110 mg, 0.27 mmol), 3-(tributylstannanylmethyl)pyridine, Example 90(a), (160 mg, 0.43 mmol), tris(dibenzylideneacetone)dipalladium(0) (24 mg, 0.027 mmol, Aldrich) and triphenylphosphine (28 mg, 0.11 mmol, Aldrich) in 1-methyl-2-pyrrolidinone (1.5 mL) was stirred at 100° C. overnight. The reaction mixture was filtered through a pad of Celite and diluted with water (50 mL). The aqueous phase was extracted with EtOAc (3×60 mL). The combined organic extracts were washed with satd NaCl (100 mL), dried over Na2SO4, filtered and concentrated in vacuo. Purification by silica gel chromatography (gradient: 0-70% EtOAc in hexane) provided the title compound as an orange solid. MP 202-203° C. MS (ESI, neg. ion) m/z: 420 (M−1).

Provenance & Evidence