α-Ferrocenylvinylacetylenes
Abstract
Thermolysis of 3-isopropyl- and 3-cyclobutyl-3- ferrocenylcyclopropenes results in the formation of 3-alkylidene-3- ferrocenylpropynes and (Z,E)-1-alkyl-1-ferrocenylpropenes; 2,2-dibromo-1-methyl-, 2,2-dibromo-1-isopropyl- and 2,2-dibromo-1- cyclobutylferrocenylcyclopropanes are converted into ferrocenylvinylacetylenes on treatment with ButOK in THF.