N-Heterocyclic Carbene-Catalyzed [2＋2＋2] Annulation of Allenoates with Trifluoromethylketones  

作　　者：孙利辉 王统 叶松 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Molecular Recognition and Function,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Journal of Chemistry》2012年第1期190-194,共5页中国化学（英文版）

摘　　要：In contrast with the reported phosphine- and DABCO-catalyzed [3 ＋ 2] and [2 ＋2] annulation of allenoates with trifluoromethylketone, the [2＋2＋2] annulation of allenoates and two molecules of trifluoromethylketone was found under the condition of N-heterocyclic carbene catalysis.In contrast with the reported phosphine- and DABCO-catalyzed [3 ＋ 2] and [2 ＋2] annulation of allenoates with trifluoromethylketone, the [2＋2＋2] annulation of allenoates and two molecules of trifluoromethylketone was found under the condition of N-heterocyclic carbene catalysis.

关 键 词：NHC-catalyzed [2 ＋ 2 ＋ 2] annulations ALLENOATES trifluoromethylketones 

分 类 号：O626[理学—有机化学] O643.36[理学—化学]