Ruthenium-Catalyzed Heteroatom-Directed Regioselective C–H Arylation of Indoles Using a Removable Tether
摘要:
A new approach to C-2 arylated indoles has been developed by utilizing a ruthenium-catalyzed, heteroatom-directed regioselective C-H arylation. The reaction is highly site-selective and results in very good yields. The highlight of the work is the use of a removable directing group and compatibility of the catalytic system with halogen functional groups in the substrates.
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.