Synthesis of Branched Alkylboronates by Copper-Catalyzed Allylic Substitution Reactions of Allylic Chlorides with 1,1-Diborylalkanes
作者:Junghoon Kim、Sangwoo Park、Jinyoung Park、Seung Hwan Cho
DOI:10.1002/anie.201509840
日期:2016.1.22
SN2′‐selective allylic substitution reaction using readily accessible allylic chlorides and 1,1‐diborylalkanes, a reaction which proceeds with chemoselective C−B bond activation of the 1,1‐diborylalkanes. In the presence of a catalytic amount of [Cu(IMes)Cl] [IMes=1,3‐bis(2,4,6‐trimethylphenyl)imidazole‐2‐ylidene] and LiOtBu as a base, a range of primary and secondary allylic chlorides undergo the SN2′‐selective
本文报道的是铜催化的S N 2'选择性烯丙基取代反应,该反应使用易于获得的烯丙基氯化物和1,1-二硼烷基烷烃,该反应随着1,1-二硼烷基烷烃的化学选择性C-B键活化而进行。在催化量的[Cu(IMes)Cl] [IMes = 1,3-双(2,4,6-三甲基苯基)咪唑-2-亚烷基]和LiO t Bu为碱的情况下,一系列伯仲烯丙基氯化物经过S N 2'-选择性烯丙基取代反应,生成支链烷基硼酸酯。还介绍了所得烷基硼酸酯的合成用途。