CuCl-mediated tandem CO insertion and annulation of 1, 4-dilithio-1, 3-dienes: formation of multiply substituted cyclopentadienones and/or their head-to-head dimers
Q Luo, C Wang, WX Zhang, Z Xi
文献索引：Luo, Qian; Wang, Chao; Zhang, Wen-Xiong; Xi, Zhenfeng Chemical Communications, 2008 , # 13 p. 1593 - 1595
The insertion reaction of carbon monoxide (CO) into organolithiums (RLi) to yield carbonyllithium species {R(C O)Li} is of significant importance because of the immediacy and efficiency for introducing carbonyl functional groups into organic molecules. 1–4 Recently, we have reported a novel 1,1-cycloaddition protocol to give trans-3-cyclopenten-1-ones by reaction of 1,4-dilithio-1,3-diene with CO, in which co-operation of the two alkenyl C–Li bonds with CO was regarded as ...
