Nickel-Catalyzed Negishi Cross-Coupling of Alkyl Halides, Including Unactivated Tertiary Halides, with a Boron-Stabilized Organozinc Reagent
作者:Panchi Guo、Hao Jin、Jinhui Han、Liang Xu、Pengfei Li、Miao Zhan
DOI:10.1021/acs.orglett.3c00051
日期:2023.3.3
Nickel-catalyzed cross-coupling of unactivated tertiary alkyl electrophiles with alkylmetal reagents is still a challenge. We report herein a nickel-catalyzed Negishi cross-coupling of alkyl halides, including unactivated tertiary halides, with boron-stabilized organozinc reagent BpinCH2ZnI, yielding versatile organoboron products with high functional-group tolerance. Importantly, the Bpin group was
未活化的叔烷基亲电子试剂与烷基金属试剂的镍催化交叉偶联仍然是一个挑战。我们在此报告了镍催化的烷基卤化物(包括未活化的叔卤化物)与硼稳定的有机锌试剂 BpinCH 2 ZnI 的根岸交叉偶联,产生具有高官能团耐受性的多功能有机硼产品。重要的是,发现 Bpin 基团对于进入季碳中心是必不可少的。制备的季有机硼酸盐的合成实用性通过它们转化为其他有用的化合物来证明。