A stereospecific and high-yielding cross-coupling reaction between alkenylboron reagents and alkyl halides is described. The reaction has been achieved by using well-defined iron bisphosphine complexes such as 1b FeCl2(3,5-t-Bu-2-SciOPP), which was recently developed by the authors' group. Various nonactivated alkyl bromides and chlorides possessing a base/nucleophile-sensitive functional group can participate in the cross-coupling, demonstrating its utility for stereoselective synthesis of functional molecules bearing a carbon carbon double bond.
Nickel-Catalyzed Cross-Coupling of Allyl Alcohols with Aryl- or Alkenylzinc Reagents
作者:Bo Yang、Zhong-Xia Wang
DOI:10.1021/acs.joc.6b02564
日期:2017.5.5
Nickel-catalyzed cross-coupling of allylalcohols with aryl- and alkenylzinc chlorides through C–O bond cleavage was performed. Reaction of (E)-3-phenylprop-2-en-1-ol and 1-aryl-prop-2-en-1-ols with aryl- or alkenylzinc chlorides gave linear cross-coupling products. Reaction of 1-phenyl- or 1-methyl-substituted (E)-3-phenylprop-2-en-1-ol with aryl- or alkenylzinc chlorides resulted in 3-aryl/alkenyl-substituted
进行了镍醇与烯丙基氯化锌和烯基氯化锌通过C–O键裂解的镍催化交叉偶联反应。(E)-3-苯基丙-2-烯-1-醇和1-芳基丙-2-烯-1-醇与芳基或烯基氯化锌的反应得到线性交叉偶联产物。1-苯基或1-甲基取代的(E)-3-苯基丙-2-烯-1-醇与芳基或烯基氯化锌的反应生成3-芳基/烯基取代的(E)-(prop-1 -烯-1,3-二基)二苯或3-芳基/烯基取代的(E)-(丁-1-烯基)苯。烯丙醇与p -Me 2 NC 6 H 4 ZnCl的反应生成正常偶联产物4-烯丙基-N,N的混合物-二甲基苯胺及其异构化产物N,N-二甲基-4-(丙-1-烯-1-基)苯胺。