Stereoselective Synthesis of Functionalized Trisubstituted Olefins via Palladium(0)-Catalyzed Cross-Coupling Reaction
作者:Alexander Arefolov、Neil F. Langille、James S. Panek
DOI:10.1021/ol016486l
日期:2001.10.1
[reaction: see text]. A highly flexible and stereoselective protocol for the synthesis of branched (E)- and (Z)-trisubstituted alkenes has been developed. The key steps are hydrozirconation-iodination of (1-alkynyl)trimethylsilane followed by Negishi-type cross-coupling. The resultant (Z)-vinyl silane is iododesilylated and subjected to a second cross-coupling reaction to give the trisubstituted olefin
[反应:请参见文字]。已经开发了用于合成支链(E)-和(Z)-三取代的烯烃的高度灵活和立体选择性的方案。关键步骤是(1-炔基)三甲基硅烷的加氢锆加碘化,然后进行Negishi型交叉偶联。所得的(Z)-乙烯基硅烷被碘去甲硅烷基化并进行第二次交叉偶联反应,得到三取代的烯烃。还描述了旨在构建二脱碳异构体的C14-C15(Z)-三取代的烯烃和Callystatin A及其类似物的C8-C9(Z)-三取代的烯烃的模型研究。