A highly diastereocontrolled formation of trans- and cis-5-allyl-N-benzylprolinols from trans- and cis-2-allyl-N-benzyl-5-piperidinols has been achieved by employing a ring-contraction protocol.
通过采用环收缩方案,可以从反式和顺式-2-烯丙基-N-苄基-5-
哌啶醇高度非对映控制地形成反式-和顺式-5-烯丙基-N-苄基脯
氨醇。