反应详情

A solution of methyl (2S,3S,5S)-5-hydroxy-1-methyl-2-[(4-phenyl-3,6-dihydropyridin-1(2H)-yl)carbonyl]piperidine-3-carboxylate (72 mg, 0.00020 mol) in methylene chloride (2.0 mL, 0.031 mol) was treated with N,N-carbonyldiimidazole (50 mg, 0.0003 mol) at rt for 2 h. To the mixture was added piperidine (0.060 mL, 0.00060 mol). After stirred at rt overnight, the mixture was concentrated to dry and used directly in next step.

1. concentrationthe mixture was concentrated
2. customto dry