Directortho-Thiolation of Arenes and Alkenes by Nickel Catalysis
摘要:
The direct thiolation of arenes and alkenes with diaryl disulfides was developed by nickel catalysis. The reaction displayed exceptional compatibility with a wide range of functional groups to regioselectively give the diaryl sulfides and alkenyl sulfides in high yields.
Nickel-catalyzed directed sulfenylation of sp<sup>2</sup> and sp<sup>3</sup> C–H bonds
作者:Xiaohan Ye、Jeffrey L. Petersen、Xiaodong Shi
DOI:10.1039/c5cc01970b
日期:——
Directed sulfenylation of both sp2 and sp3 C–H bonds was achieved through nickel catalyzed directed C–S bond formation, giving the desired product in good to excellent yield (up to 90%).
diverse five‐membered lactams from aliphaticamides and terminal acetylenes with the assistance of an 8‐aminoquinolyl auxiliary has been achieved. A broad range of terminal acetylenes and aliphaticamides proved to be the efficient coupling partners, furnishing the corresponding lactams in moderate to good yields. The transformation is proven to undergo an oxidative alkynylation followed by the intramolecular
Copper-Catalyzed C–H Carbamoyloxylation of Aryl Carboxamides with CO<sub>2</sub> and Amines at Ambient Conditions
作者:Xiang Luo、Xianheng Song、Wenfang Xiong、Jianheng Li、Mingkang Li、Zefeng Zhu、Shuxian Wei、Albert S. C. Chan、Yong Zou
DOI:10.1021/acs.orglett.9b00122
日期:2019.4.5
A copper-catalyzed, 8-aminoquinoline-assisted, one-potthree-component coupling of aryl carboxamides, CO2, and amines has been developed. This protocol proceeds smoothly in the presence of inexpensive CuI and MnO2 at room temperature under atmospheric CO2 pressure, leading to simultaneous construction of C–O and C–N bonds. The reaction displays a broad substrate scope, high functional group tolerance
Nickel-Catalyzed CH Alkylations: Direct Secondary Alkylations and Trifluoroethylations of Arenes
作者:Weifeng Song、Sebastian Lackner、Lutz Ackermann
DOI:10.1002/anie.201309584
日期:2014.2.24
A versatile nickel catalyst allowed for CHalkylations of unactivated arenes with challenging secondary alkyl bromides and chlorides. The high catalytic efficacy also set the stage for direct secondary alkylations of indoles as well as CH trifluoroethylations with ample substrate scope.
Nickel-Catalyzed Direct Alkylation of C–H Bonds in Benzamides and Acrylamides with Functionalized Alkyl Halides via Bidentate-Chelation Assistance
作者:Yoshinori Aihara、Naoto Chatani
DOI:10.1021/ja401344e
日期:2013.4.10
The alkylation of the ortho C-H bonds in benzamides and acrylamides containing an 8-aminoquinoline moiety as a bidentate directing group with unactivated alkylhalides using nickel complexes as catalysts is described. The reaction shows high functional group compatibility. In reactions of meta-substituted aromatic amides, the reaction proceeds in a highly selective manner at the less hindered C-H bond