Oxidant-Free Rh(III)-Catalyzed Direct C–H Olefination of Arenes with Allyl Acetates
作者:Chao Feng、Daming Feng、Teck-Peng Loh
DOI:10.1021/ol4015442
日期:2013.7.19
Rh(III)-catalyzed direct olefination of arenes with allyl acetate via C-H bond activation is described using N,N-disubstituted aminocarbonyl as the directing group. The catalyst undergoes a redox neutral process, and high to excellent yields of trans-products are obtained. This protocol exhibits a wide spectrum of functionality compatibility because of the simple reaction conditions employed and provides a highly effective synthetic method in the realm of C-H olefination.
Ruthenium(II)-Catalyzed Oxidant-Free C-H Olefination of Aromatic Carboxamides with Allyl Acetate
An inexpensive ruthenium‐catalyzed direct C–H olefination of aromatic carboxamides with allyl acetate was developed. This external oxidant‐free protocol provided an efficient route for the synthesis of useful trans‐styrene derivatives in high to excellent yields. The olefination reaction exhibited excellent regioselectivities and allowed the presence of a wide range of functional groups, such as OMe