反应详情

A suspension of 7-bromo-1,3,4,5-tetrahydropyrido[2,3-e][1,4]diazepin-2-one hydrochloride (0.29 g, 1.0 mmol) and N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide (0.29 g, 1.3 mmol) in propionitrile (5 mL) and DMF (1.3 mL) was de-oxygenated with Ar for 10 min. The mixture was treated with (i-Pr)2EtN (0.56 mL, 3.2 mmol) and was de-oxygenated with Ar for 5 min. Pd(OAc)2 (24 mg, 0.11 mmol) and P(o-tol)3 (64 mg, 0.21 mmol) were added simultaneously, and the mixture was de-oxygenated a third time for 5 min. The mixture was heated to reflux overnight, then allowed to cool. The resulting precipitate was isolated by filtration, dissolved in CH2Cl2/MeOH and the solvent was removed in vacuo. Purification by flash column chromatography (silica gel, CH2Cl2/MeOH, 98:2 to 96:4) gave the title compound (0.18 g, 47%) as a white solid: MS (ESI) m/e 391 (M+H)+.

1. waitwas de-oxygenated with Ar for 5 min
2. customfor 5 min
3. temperatureThe mixture was heated
4. temperatureto reflux overnight
5. temperatureto cool
6. customThe resulting precipitate was isolated by filtration
7. customthe solvent was removed in vacuo
8. customPurification by flash column chromatography (silica gel, CH2Cl2/MeOH, 98:2 to 96:4)