Tandem Silylformylation−Crotylsilylation/Tamao Oxidation of Internal Alkynes: A Remarkable Example of Generating Complexity from Simplicity
作者:Jared T. Spletstoser、Michael J. Zacuto、James L. Leighton
DOI:10.1021/ol802489w
日期:2008.12.18
The rhodium-catalyzed tandem silylformylation-crotylsilylation reaction has been extended to include internal alkynes. Tamao oxidation of the initial product leads to the production of a substituted enol, which undergoes highly diastereoselective tautomerization. The resulting one-pot procedure fashions three new stereocenters, a ketone, and a terminal alkene from a butenyl group, a propynyl group
铑催化的串联甲硅烷基甲酰化-巴豆基甲硅烷基化反应已扩展到包括内部炔烃。初始产物的 Tamao 氧化导致取代的烯醇的产生,该烯醇经历高度非对映选择性互变异构化。由此产生的一锅法由丁烯基、丙炔基、甲硅烷基氢化物、H2O2 和 CO 形成三个新的立体中心、一个酮和一个末端烯烃。