Lithium (E)-N-benzyl-O-(4-methoxy-4-phenylbut-2-enyl)- hydroxylamide undergoes a highly diastereoselective rearrangement via a chelated transition state, to afford after reduction, syn-3-benzylamino-4-methoxy-4-phenylbut-1-ene as a single diastereoisomer.
锂(E)-N-苄基-O-(4-甲氧基-4-苯基丁-2-烯基)-羟基酰胺通过螯合过渡态发生高度非对映选择性重排,在还原后得到单一非对映异构体,即3-苄
氨基-4-甲氧基-4-苯基丁-1-烯。