Highly Stereoselective Synthesis of Conjugated Polyenes via a Homocoupling Reaction of Unsaturated Silanes
作者:Francesco Babudri、Angela R. Cicciomessere、Gianluca M. Farinola、Vito Fiandanese、Giuseppe Marchese、Roberta Musio、Francesco Naso、Oronzo Sciacovelli
DOI:10.1021/jo9700437
日期:1997.5.1
A new method for the synthesis of conjugated polyenes containing up to eight double bonds with all-E configuration is reported. The procedure is based upon a homocouplingreaction of dienyl-, trienyl-, or tetraenylsilanes, promoted by PdCl(2) in methanol and in the presence of LiCl and CuCl(2). Configurational and conformational assignments were rigorously made on the basis of NMR spectra. The compounds