Cobalt(II)-Catalyzed Activation of C(sp<sup>3</sup>)–H Bonds: Organic Oxidant Enabled Selective Functionalization
作者:He Zhang、Meng-Chan Sun、Dandan Yang、Tong Li、Mao-Ping Song、Jun-Long Niu
DOI:10.1021/acscatal.1c05250
日期:2022.2.4
develop a new “cobalt(II)/organic oxidant” catalytic system for the selective activation of 1°, 2°, and 3° C(sp3)–H bonds to construct C–N and C–O bonds, respectively. The method highlights the use of an organic compound (TsNHOPiv or its analogues) as an emerging oxidant and thus provides a flexible strategy for the preparation of indoline and benzoxazine derivatives. Attractive advantages of this cobalt
在此,我们开发了一种新的“钴(II)/有机氧化剂”催化体系,用于选择性激活 1°、2° 和 3° C(sp 3 )-H 键,分别构建 C-N 和 C-O 键. 该方法突出了有机化合物(TsNHOPiv 或其类似物)作为新兴氧化剂的用途,从而为二氢吲哚和苯并恶嗪衍生物的制备提供了灵活的策略。这种钴催化的有吸引力的优点包括操作简单、成本低、条件温和、底物范围广。此外,合成了一种催化能力强的羟胺螯合有机金属钴(III)物种,从而为催化机理提供了深刻的见解。