Manganese-Catalyzed Direct Nucleophilic C(sp<sup>2</sup>)H Addition to Aldehydes and Nitriles
作者:Bingwei Zhou、Yuanyuan Hu、Congyang Wang
DOI:10.1002/anie.201506187
日期:2015.11.9
Herein, a manganese‐catalyzed nucleophilicaddition of inert C(sp2)H bonds to aldehydes and nitriles is disclosed by virtue of a dual activation strategy. The reactions feature mild reaction conditions, excellent regio‐ and stereoselectivity, and a wide substrate scope, which includes both aromatic and olefinic CH bonds, as well as a large variety of aldehydes and nitriles. Moreover, mechanistic studies
Rh(III)‐Catalyzed Regioselective Acetylation of sp
<sup>2</sup>
C−H Bond Starting from Paraformaldehyde
作者:Ting Wan、Sidong Du、Chao Pi、Yong Wang、Rongbin Li、Yangjie Wu、Xiuling Cui
DOI:10.1002/cctc.201801512
日期:2019.8.21
Rh(III)‐catalyzedacetylation of sp2 C−H bonds has been realized using paraformaldehyde as an acetylating reagent. This procedure features simultaneous formation of two C−C bonds, external oxidants free, and water as the sole byproducts, thus offering an environmentally benign acetylation of arenes. A range of functional groups tolerance were observed.
Direct Carbo-Acylation Reactions of 2-Arylpyridines with α-Diketones via Pd-Catalyzed C–H Activation and Selective C(sp2)–C(sp2) Cleavage
作者:Wei Zhou、Hongji Li、Lei Wang
DOI:10.1021/ol3020557
日期:2012.9.7
An efficient carbo-acylation reaction of 2-arylpyridines with alpha-diketones via Pd-catalyzed C-H bond activation and C-C bond cleavage in the presence of TBHP was developed that generated aryl ketones in good yields. The highly selective formation of aryl ketones was observed when 2-arylpyridines reacted with aromatic/aliphatic alpha-diketones.