作者:Atsushi Nishida、Norio Kawahara、Mayumi Nishida、Osamu Yonemitsu
DOI:10.1016/0040-4020(96)00511-x
日期:1996.7
The generation and cyclization of several heterocyclic radicals were investigated. The hydrogen abstraction from 1,3-dithiane, 1,3-dithiolane, and 1,3-oxathiane rings by a benzophenone triplet generated the corresponding heterocyclic radicals, which gave the cyclized products by intramolecular addition to α,β-unsaturated esters. Diastereoselective radical cyclization using chiral acetals was also investigated
研究了几种杂环基的产生和环化。通过二苯甲酮三联体从1,3-二硫杂环戊烷,1,3-二硫杂环戊烷和1,3-氧杂蒽环上夺氢产生了相应的杂环基,这些杂环基通过分子内加成α,β-不饱和酯而得到环化产物。还研究了使用手性缩醛的非对映选择性自由基环化。