作者:Makoto Yamamoto、Atsuko Furusawa、Seiji Iwasa、Shigeo Kohmoto、Kazutoshi Yamada
DOI:10.1246/bcsj.65.1550
日期:1992.6
A novel intramolecular ketene radical cyclization was described. Treatment of α-bromo-β-alkoxycarbonyl- and α-bromo-β-oxoketene dithioacetals with tributyltin hydride and AIBN gave lactones and cyclic ketones bearing bis(methylthio)methylene substituent at α-position in moderate yields. Tandem radical cyclization of ketene radical synthons were also carried out.
描述了一种新的分子内烯酮自由基环化。用氢化三丁基锡和 AIBN 处理 α-溴-β-烷氧基羰基-和 α-溴-β-氧代烯酮二硫缩醛,以中等产率得到内酯和在 α 位带有双(甲硫基)亚甲基取代基的环酮。还进行了烯酮自由基合成子的串联自由基环化。