Intramolecular Addition of γ-Chloro Carbanions to Electrophilic Groups: Synthesis of Tricyclic Tetrahydrofurans, Pyrrolidines, and Cyclopentanes
作者:Anna Wojtasiewicz、Michał Barbasiewicz、Mieczysław Mąkosza
DOI:10.1002/ejoc.200901131
日期:2010.4
Carbanions of 3-chloropropyl phenyl sulfones containing electrophilic groups such as carbonyl and imino groups in the ortho position of the phenyl ring add intramolecularly to these groups to give aldol-type anions. These anions undergo intramolecular 1,5-substitution of chlorine to give tricyclic derivatives of tetrahydrofuran, pyrrolidine, and cyclopentane.
3-氯丙基苯砜的碳负离子在苯环的邻位含有亲电子基团,如羰基和亚氨基,分子内加成到这些基团上,得到羟醛型阴离子。这些阴离子经历氯的分子内 1,5-取代,得到四氢呋喃、吡咯烷和环戊烷的三环衍生物。