Stereoselective Synthesis of Trisubstituted Alkenes via Cobalt-Catalyzed Double Dehydrogenative Borylations of 1-Alkenes
作者:Huanan Wen、Lei Zhang、Suzhen Zhu、Guixia Liu、Zheng Huang
DOI:10.1021/acscatal.7b02104
日期:2017.10.6
A highly selective cobalt-catalyzed single and double dehydrogenative borylations (DHBs) of terminal alkenes have been developed for the synthesis of trans-monoborylalkenes and diborylalkenes, respectively. While the cobalt-catalyzed double DHBs of aryl 1-alkenes with 2 equiv of bis(pinacolato)diboron (B2pin2) in the presence of 1 equiv of CsF in DMF produce 1,1-diborylalkenes selectively, the double
已经开发出高选择性钴催化的末端烯烃的单和双脱氢硼化(DHB),分别用于合成反式-单硼烷基烯烃和二硼烷基烯烃。在DMF中存在1当量CsF的情况下,钴催化芳基1-烯烃与2当量双(频哪醇)二硼(B 2销2)的双DHB选择性地生成1,1-二硼烷基烯烃,而双DHB与烷基1-烯烃以选择性方式产生顺式1,2-二硼基烯烃。将1,1-二硼烷基烯烃产物进一步应用于与芳基卤化物的逐步和立体有规的交叉偶联,以产生三取代的烯烃,包括三芳基烯烃。