2-甲基丙烯醛 、 methyl N-[(1E)-buta-1,3-dienyl]-N-methylcarbamate 在
Jacobsens's Cr(III)-salen catalyst hexafluoroantimonate 4 A molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 22.0h,
生成
N-[(1S,6R)-6-formyl-6-methyl-2-cyclohexen-1-yl]-N-methyl-carbamic acid methyl ester 、 N-[(1R,6S)-6-formyl-6-methyl-2-cyclohexen-1-yl]-N-methyl-carbamic acid methyl ester