描述了一种新的铑催化的苯并[ h ]喹啉-10-羧酸乙酯与有机硼化合物的脱羰偶联反应,该反应通过螯合辅助的sp 2 C-COOEt键活化而发生。在该系统中,CuCl发挥了非常重要的作用,并且五元罗丹环也作为关键中间体参与其中。在反应中各种官能团是相容的,并且以良好至优异的产率获得了所需的产物。还已经使用Rh(I)模型催化剂对该反应机理进行了DFT计算。
Rhodium-catalyzed decarbonylation cross-coupling reactions of aromatic aldehydes and arylboronic acids via C C bond activation directed by a guide group chelation
作者:Xiaobo Yu、Guanchen Liu、Shudong Geng
DOI:10.1016/j.inoche.2020.108065
日期:2020.9
Abstract A rhodium-catalyzed decarbonylative cross-coupling reaction of benzoquinoline-10-carbaldehydes with arylboronicacidsthrough chelation-assisted sp2 C−CHO bond activation has been developed. A variety of functional groups substituted phenylboronic acids or benzoquinoline-10-carbaldehydes are compatible with the reaction under the optimized reaction conditions, the corresponding 10-phenylbenzo[h]quinoline
Efficient Approach To Construct Unsymmetrical Biaryls through Oxidative Coupling Reactions of Aromatic Primary Alcohols and Arylboronic Acids with a Rhodium Catalyst
作者:Xiaobo Yu、Jingjing Wang、Weijie Guo、Yun Tian、Jianhui Wang
DOI:10.1021/acs.organomet.6b00238
日期:2016.6.13
Unsymmetrical biaryls were synthesized by oxidative coupling reactions, between aromatic primary alcohols and arylboronic acids through the C-C bond cleavage of the primary alcohols chelated With a rhodium catalyst. The desired unsymmetrical biaryl products were obtained in good to excellent yields under the optimized reaction conditions. A wide variety of functionalities are compatible with the reaction under the optimized conditions. This new coupling strategy provides a favorable method to construct valuable biaryl compounds from aromatic primary alcohols which are cheap; environmentally friendly, and easily accessible substrates.