(2R,5S)-1-Benzyl-5-methylcarbamoyl-pyrrolidine-2-carboxylic acid 在
苯 、
(2R,5S)-1-Benzyl-5-methylcarbamoyl-pyrrolidine-2-carboxylic acid 、 desired product 、 alumina 作用下,
以
乙酸酐 为溶剂,
反应 0.75h,
以to give 13.2 g (44%) of pure, oily 8-benzyl-3-methyl-3,8-diazabicyclo[3.2.1]octane-2,4-dione的产率得到8-Benzyl-3-methyl-3,8-diazabicyclo<3.2.>octan-2,4-dion