Rhodium-Catalyzed Cross-Coupling Reactions of Carboxylate and Organoboron Compounds via Chelation-Assisted C–C Bond Activation
作者:Jingjing Wang、Bowen Liu、Haitao Zhao、Jianhui Wang
DOI:10.1021/om300994j
日期:2012.12.24
A new rhodium-catalyzed decarbonylated coupling reaction of ethyl benzo[h]quinoline-10-carboxylate and organoboroncompounds that occurs through chelation-assisted sp2 C–COOEt bond activation was described. In this system CuCl played a very important role, and a five-membered rhodacycle was also involved as a key intermediate. Various functionalities were compatible in the reaction, and the desired
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。
Direct Cross-Coupling of CH Bonds with Grignard Reagents through Cobalt Catalysis
作者:Bin Li、Zhen-Hua Wu、Yi-Fan Gu、Chang-Liang Sun、Bai-Quan Wang、Zhang-Jie Shi
DOI:10.1002/anie.201005394
日期:2011.2.1
Go go Grignard! The first highly regioselective, cobalt‐catalyzed CH transformation of benzo[h]quinoline and phenylpyridine derivatives with Grignardreagents at room temperature has been achieved (see scheme). Both aryl and alkyl Grignardreagents showed significant reactivity.
快去格利雅(Grignard)!在室温下,使用格氏试剂首次实现了对苯并[ h ]喹啉和苯基吡啶衍生物的高区域选择性,钴催化的CH转化(参见方案)。芳基和烷基格氏试剂均显示出显着的反应性。
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
Ruthenium(II)-Catalyzed Chelation-Assisted Desulfitative Arylation of Benzo[h]quinolines with Arylsulfonyl Chlorides
作者:Yi-Xin Xu、Yu-Qing Liang、Zhong-Jian Cai、Shun-Jun Ji
DOI:10.1021/acs.orglett.2c00542
日期:2022.4.15
chelation-assisted C–H arylation reaction of benzo[h]quinoline is described. This transformation, using [RuCl2(p-cymene)]2 as the catalyst and cheap and easily accessible arylsulfonylchlorides as the arylation source, featured simple reaction conditions, a broad substrate scope, and functional group tolerance. The successful application of some bioactive-molecule-based sulfonyl chlorides further highlighted
在此,描述了苯并[h]喹啉的新型螯合辅助 C-H 芳基化反应。该转化以[RuCl 2 ( p -cymene)] 2为催化剂,廉价易得的芳基磺酰氯为芳基化源,具有反应条件简单、底物范围广、官能团耐受性高等特点。一些基于生物活性分子的磺酰氯的成功应用进一步突出了这种脱硫 C-H 芳基化方案的潜在用途和重要性。
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.