Whereas the reaction of 1,1-dimethyl-1-silacyclobutane (1a) with dimethyl acetylenedicarboxylate in the presence of Pd catalyst provides dimethyl 1,1-dimethyl-1-sila-2-cyclohexene-2,3-dicarboxylate...
NOVEL [σ+π] CYCLOADDITION OF SILACYCLOBUTANES WITH ACETYLENES CATALYZED BY PALLADIUM COMPLEXES
作者:Hideki Sakurai、Takafumi Imai
DOI:10.1246/cl.1975.891
日期:1975.8.5
In the presence of a palladiumcomplex, 1,1-dimethyl-1-silacyclobutane reacts smoothly with dimethyl acetylenedicarboxylate to give 1,1-dimethyl-2,3-bis(methoxycarbonyl)-1-silacyclohex-2-ene in quantitative yield. Other silacyclobutanes react similarly with various acetylenes to give silacyclohexene derivatives.