Tri-o-tolylphosphine → (E)-N-methyl-3-(8-oxo-6,7,8,9-tetrahydro-5H-pyrido[2,3-b]azepin-3-yl)acrylamide

Participants

Reaction Steps

A solution of 3-bromo-5,6,7,9-tetrahydro-pyrido[2,3-b]azepin-8-one (0.60 g, 2.50 mmole), N-(2-methyl-1H-indol-3-ylmethyl)-N-methylacrylamide (0.85 g, 3.75 mmole), Pd(OAc)2 (0.06 g, 0.25 mmole), tri-ortho-tolylphosphine (0.15 g, 0.50 mmole) and diisopropylethylamine (0.87 mL, 5.00 mmole) in propionitrile (50 mL) was deoxygenated, then was and heated to reflux under a N2 overnight. The dark mixture was filtered through a pad of Celite®, and the filter pad was rinsed with acetonitrile (200 mL). The filtrate was concentrated in vacuo, and the residue was purified by flash chromatography on silica gel (10% MeOH/CHCl3). The title compound (0.35 g. 35%) was obtained as a light tan solid after drying in vacuo: MS (ES) m/e 246 (M+H)+.

Provenance & Evidence