3-dehydrochlorination affording intermediate cyclopropylideneamines (N-analogues of cyclopropanones), which “dimerize” in an unusual way. This mechanism entails a “normal” opening as well as an “abnormal” opening of incipient cyclopropylideneamine adducts. This rearrangement represents an example of the scarcely reported abnormal opening of functionalized cyclopropylamines.
N-(3-
氯-3-甲基-2-丁叉)胺(即α-
氯代酮
亚胺)与
二异丙基氨基化
锂在
四氢呋喃中的反应导致意外的反应,导致2-(N-烷基亚
氨基)-3,3-二甲基-1-异丙基-5-(2-甲基亚丙基)
吡咯烷具有良好的收率。用Favorskii型1,3-脱
氯化氢来解释反应机理,得到中间体环丙叉
亚胺(
环丙烷的N-类似物),其以不寻常的方式“二聚”。这种机理需要初始的环
丙二烯胺加合物的“正常”开口和“异常”开口。这种重排代表了很少报道的官能化
环丙胺异常打开的例子。