LDA-Mediated Selective Addition Reaction of Vinylidenecyclopropanes with Aldehydes, Ketones, and Enones: Facile Synthesis of Vinylcyclopropenes, Allenols, and 1,3-Enynes
摘要:
Highly selective addition reaction of vinylidenecyclopropanes 1 was realized by treatment with LDA in THF and quenching with aldehydes, ketones, and enones. A number of vinylcyclopropenes, allenols, and 1,3-enynes were obtained selectively in moderate to good yields depending on the nature of different electrophiles.
Synthesis of substituted pyrrolidines by reaction of aryl-substituted vinylidenecyclopropanes with aromatic imines catalyzed by BF3·Et2O
作者:A. V. Stepakov、A. G. Larina、O. V. Radina、V. M. Boitsov、A. P. Molchanov
DOI:10.1007/s10593-008-0059-8
日期:2008.4
The reactions of 1,1-diaryl-2-(diphenylvinylidene)cyclopropanes and 1,1-diaryl-2-(2-phenylpropenylidine) cyclopropanes with aromatic amines in the presence of BF3 center dot Et2O leads to the formation of pyrrolidine derivatives.