Copper(I)-Catalyzed Chlorine Atom Transfer Radical Cyclization Reactions of Unsaturated α-Chloro β-Keto Esters
作者:Dan Yang、Yi-Long Yan、Bao-Fu Zheng、Qiang Gao、Nian-Yong Zhu
DOI:10.1021/ol0623264
日期:2006.12.1
Copper(I) chloride catalyzed chlorine atom transfer radical cyclization reactions of a series of olefinic alpha-chloro beta-keto esters were investigated. It was found that alpha-dichlorinated beta-keto esters were suitable substrates; the chlorine transfer mono or tandem radical cyclization reactions catalyzed by CuCl complex with bis(oxazoline) or bipyridine proceeded smoothly in dichloroethane at
研究了
氯化
铜(I)催化的一系列烯烃α-
氯β-
酮酯的
氯原子转移自由基环化反应。已经发现,α-二
氯代β-
酮酯是合适的底物。CuCl配合物与双(
恶唑啉)或联
吡啶催化的
氯转移单环或串联自由基环化反应在室温或80摄氏度的
二氯乙烷中顺利进行,提供了中等至高收率的环状和
双环化合物。[反应:看文字]