Nickel-Catalyzed C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Cross-Electrophile Coupling of In Situ Generated NHP Esters with Unactivated Alkyl Bromides
作者:Kai Kang、Daniel J. Weix
DOI:10.1021/acs.orglett.2c00805
日期:2022.4.22
The formation of C(sp3)–C(sp3) bonds by cross-coupling remains a challenge in synthesis. Here, we demonstrate a two-step, one-pot protocol for the in situ generation of N-hydroxyphthalimide esters and their nickel-catalyzed cross-electrophile coupling with unactivated alkyl bromides for the construction of 1°/1 ° C(sp3)–C(sp3) bonds. The conditions tolerate an array of functional groups, and mechanistic
通过交叉偶联形成C(sp 3 )–C(sp 3 )键仍然是合成中的一个挑战。在这里,我们演示了一种两步一锅法,用于原位生成N-羟基邻苯二甲酰亚胺酯及其镍催化的交叉亲电子试剂与未活化的烷基溴的偶联,以构建 1°/1°C(sp 3 ) –C(sp 3 ) 键。该条件可耐受一系列官能团,机理研究表明两种底物在反应过程中均转化为烷基自由基。