Allenes. Part XV. The addition of dihalocarbenes to allenes and conversion of 1,1-dihalo-2-methylenecyclopropanes to cumulenes
Abstract
The addition of dichloro- and dibromo-carbenes to the more substituted double bond of five different allenes gave 1,1-dichloro- and 1,1-dibromo-2-methylenecyclopropanes. Some of these have been converted by means of n-butyl lithium to cumulenes.