Intermolecular Hydroalkoxylation and Hydrocarboxylation of 2-Azadienes with High Efficiency
作者:Juan M. I. Serviano、Erik J. T. Phipps、Patrick L. Holland
DOI:10.1021/acs.joc.2c02534
日期:2023.3.3
hydrocarboxylation of 2-azadienes through cobalt-catalyzed hydrogen atom transfer and oxidation. This protocol provides a source of 2-azaallyl cation equivalents under mild conditions, is chemoselective in the presence of other C═C double bonds, and requires no excess amount of added alcohol or oxidant. Mechanistic studies suggest that the selectivity arises from lowering the transition state that leads
本文描述了一种通过钴催化的氢原子转移和氧化进行2-氮杂二烯分子间加氢烷氧基化和加氢羧基化的方法。该方案在温和条件下提供了 2-氮杂烯丙基阳离子当量的来源,在其他 C=C 双键存在的情况下具有化学选择性,并且不需要添加过量的醇或氧化剂。机理研究表明,选择性是由于降低过渡态而产生高度稳定的 2-氮杂烯丙基自由基。