878274-47-6Relevant articles and documents
Synthesis of the indene, THF, and pyrrolidine skeletons by lewis acid mediated cycloaddition of methylenecyclopropanes with aldehydes, N-tosyl aldimines, and acetals
Shao, Li-Xiong,Xu, Bo,Huang, Jin-Wen,Shi, Min
, p. 510 - 517 (2008/09/20)
Methylenecyclopropanes (MCPs 1) react with aldehydes, N-tosyl aldimines, and acetals to give the corresponding indene. THE and pyrrolidine cyclo-addition products in the presence of BF2·'OEt2 under mild reaction conditions. Some special transformations of MCPs 1 with aldehydes have been reported in this paper. A plausible reaction mechanism has been discussed, which is based on a deuterium-labeling experiment and the Prins-type reaction mechanism.