Dialkylborylmethylcyclobutene-1-(dialkylboryl)-2-methylenecyclobutane: A new metallotropic system. the synthesis of 2-substituted methylene-cyclobutane and cyclobutene derivatives
作者:Yu. N. Bubnov、M. E. Gurskii、L. I. Lavrinovich
DOI:10.1007/bf00954638
日期:1986.8
Cyclizations of 3,4-pentadien-1-yllithium reagents
作者:Jack K. Crandall、Timothy A. Ayers
DOI:10.1021/jo00037a008
日期:1992.5
A number of 3,4-pentadien-1-yllithium reagents were obtained by metal-halogen exchange. Certain of these intermediates undergo facile cyclization to the isomeric 1-cyclobutenylmethyllithium derivatives.