Facile Synthesis of Multiply Substituted Cyclopentadienes and Conjugated Dienals through Reactions between 1,4-Dilithio-1,3-dienes and Carboxylic Acid Derivatives Including Acyl Chlorides, Anhydrides, and DMF
作者:Chao Wang、Guo-Liang Mao、Zhi-Hui Wang、Zhen-Feng Xi
DOI:10.1002/ejoc.200600504
日期:2007.3
Multiply substituted cyclopentadienes were formed through reactions between phenyl-substituted 1,4-dilithio-1,3-dienes such as 1b and 1c and two molecules of acyl chlorides. The phenyl substituents on the skeletons of the dilithiobutadiene derivatives played an essential role in the reaction pattern. Interestingly, when anhydrides were used, normal alkyl-substituted 1,4-dilithio-1,3-dienes such as