反应详情

A 250-mL round-bottom flask was charged with a solution of benzyl 3-acetylpiperidine-1-carboxylate (15 g, 54.53 mmol, 1.00 equiv, 95%) in DMF (100 mL). To the mixture was added DMF-DMA (17 g, 141.43 mmol, 2.50 equiv, 99%). The resulting solution was allowed to reflux for about 6 hours. The mixture was then cooled down to room temperature and concentrated on a rotary evaporator affording crude (E)-benzyl 3-(3-(dimethylamino)acryloyl)piperidine-1-carboxylate as brown oil (19 g).

1. temperatureto reflux for about 6 hours
2. concentrationconcentrated on a rotary evaporator