Nickel‐ and Palladium‐Catalyzed Cross‐Coupling Reactions of Organostibines with Organoboronic Acids
作者:Dejiang Zhang、Liyuan Le、Renhua Qiu、Wai‐Yeung Wong、Nobuaki Kambe
DOI:10.1002/anie.202011491
日期:2021.2.8
successful synthesis of arylated stibine 3 a in a scale of 34.77 g demonstrates high synthetic potential of this transformation. The formed stibines (R3Sb) were then used for the palladium‐catalyzed carbon–carbon bond forming reaction with aryl boronic acids [R−B(OH)2], giving biaryls with high selectivity, even the structures of two organomoieties (R and R′) are very similar. Plausible catalytic pathways
镍催化的halostibines交叉偶联,开发了一种形成锑-碳键的策略。该方法已被用于从相应的环状和非环状halostibines合成各种三芳基和二芳基烷基stibines。该方案显示了广泛的底物范围(72个实例),并且与各种官能团(如醛,酮,烯烃,炔烃,卤代芳烃(F,Cl,Br,I)和杂芳烃)兼容。成功合成规模为34.77 g的芳基锑化3a证明了这种转化的高合成潜力。然后将形成的stibines(R 3 Sb)用于与芳基硼酸[ RB (OH)2的钯催化的碳-碳键形成反应,从而产生具有高选择性的联芳基,甚至两个有机基团(R和R')的结构也非常相似。根据控制实验提出了合理的催化途径。