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%。
deaminative olefination of organoammonium salts was developed. Only mediated by KOtBu, a series of benzyl and cinnamyl ammonium salts reacted smoothly with sulfones, producing the valuable stilbenes and related 1,3-diene derivatives in good to high yields with good functional group tolerance and excellent E-selectivity. With this developed method, biologically active resveratrol and DMU-212 were also successfully
开发了一种碱促进的有机铵盐直接脱氨基烯化。仅由 KO t Bu 介导,一系列苄基和肉桂基铵盐与砜类顺利反应,以良好至高收率生产有价值的二苯乙烯和相关的 1,3-二烯衍生物,具有良好的官能团耐受性和优异的E选择性。利用该方法,还成功制备了具有生物活性的白藜芦醇和DMU-212,进一步证明了该反应的实用性。
SUBSTITUTED STILBENES AND 1,4-DIPHENYLBUTADIENES. PART III. MEERWEIN REACTION WITH p-AMINOBIPHENYL A NEW SYNTHESIS OF lin.-QUATERPHENYL