Pd-Catalyzed Cross-Coupling of Organostibines with Styrenes to Give Unsymmetric (<i>E</i>)-Stilbenes and (1<i>E</i>,3<i>E</i>)-1,4-Diarylbuta-1,3-dienes and Fluorescence Properties of the Products
作者:Zhao Zhang、Dejiang Zhang、Longzhi Zhu、Dishu Zeng、Nobuaki Kambe、Renhua Qiu
DOI:10.1021/acs.orglett.1c01532
日期:2021.7.16
A general and effective palladium-catalyzed cross-coupling of organostibines with styrenes to give (E)-olefins was disclosed. By the use of an organostibine reagent, this method can produce unsymmetric (E)-1,2-diarylethylenes and (1E,3E)-1,4-diarylbuta-1,3-dienes in good yields with high E/Z selectivity and good functional group tolerance. Resveratrol and DMU-212 were synthesized in high yield. The
公开了一种通用且有效的钯催化的有机锑与苯乙烯的交叉偶联,以得到 ( E )-烯烃。通过使用有机锑试剂,该方法可以以良好的收率和高E / Z制备不对称的 ( E )-1,2-二芳基乙烯和 (1 E ,3 E )-1,4-二芳基丁二烯-1,3-二烯选择性和良好的官能团耐受性。白藜芦醇和 DMU-212 以高产率合成。该协议可以扩展到 (1 E ,3 E ,5 E )-1,6-diphenylhexa-1,3,5-triene的合成,产率为 40%。产品5e、5f和7a 显示出良好的光致发光量子产率,范围为 72% 至 99%。