The Rh(I)-catalyzed direct reorganization of organic frameworks and group exchanges between carboxylic acids and aryl ketones was developed with the assistance of directinggroup. Biaryls, alkenylarenes, and alkylarenes were produced in high efficiency from aryl ketones and the corresponding carboxylic acids by releasing the other molecule of carboxylic acids and carbon monoxide. A wide range of functional
Expeditious and Solvent-Free Nickel-Catalyzed C−H Arylation of Arenes and Indoles
作者:Rahul A. Jagtap、Vineeta Soni、Benudhar Punji
DOI:10.1002/cssc.201700321
日期:2017.5.22
nickel‐catalyzed method for C−Hbond arylation of arenes and indoles has been developed, which proceeds expeditiously through chelation assistance. The reaction is highly selective for mono‐arylation and tolerates sensitive and structurally diverse functionalities, such as halides, ethers, amines, indole, pyrrole and carbazole. This reaction represents the first example of a nickel‐catalyzed C−H arylation by monochelate
Cobalt-Catalyzed Direct Arylation and Benzylation by CH/CO Cleavage with Sulfamates, Carbamates, and Phosphates
作者:Weifeng Song、Lutz Ackermann
DOI:10.1002/anie.201202466
日期:2012.8.13
Inexpensive cobalt catalysts enable the first directarylation and benzylation of (hetero)arenes with aryl carbamates, sulfamates, and phosphates with ample scope. The non‐radical CH/COarylation reaction even proved viable at ambient temperature.