Selective Catalytic B–H Arylation of <i>o</i>-Carboranyl Aldehydes by a Transient Directing Strategy
作者:Xiaolei Zhang、Hongning Zheng、Jie Li、Fei Xu、Jing Zhao、Hong Yan
DOI:10.1021/jacs.7b07160
日期:2017.10.18
Carboranyl aldehydes are among the most useful synthons in derivatization of carboranes. However, compared to the utilization of carboranyl carboxylic acids in selective B-H bond functionalizations, the synthetic application of carboranyl aldehydes is limited due to the weakly coordinating nature of the aldehyde group. Herein, the direct arylation of o-carboranyl aldehydes has been developed via Pd-catalyzed
Iron(III)-catalyzed aerobic oxidation for the synthesis of 1-benzoxazolyl-o-carboranes
作者:Ji Wu、Ke Cao、Cai-Yan Zhang、Xin-Yu Wen、Bo Li、Junxiao Yang
DOI:10.1016/j.jorganchem.2021.121881
日期:2021.7
A FeCl3 catalyzed tandem condensation/cyclization/aerobicoxidation process for synthesis of 1-benzoxazolyl-o-carboranes has been developed. The degradation of o-carborane in the presence of aza-/oxa-nucleophiles was completely suppressed, and a series of 1-benzoxazolyl-o-carboranes, 1-benzothiazolyl-o-carborane and 1-benzimidazolyl-o-carborane have been synthesized with good to excellent yields. This