Palladium-catalyzed Csp<sup>2</sup>–H carbonylation of aromatic oximes: selective access to benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones
A selective palladium-catalyzed carbonylation of Csp2–H bonds with aromatic oximes for the synthesis of benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones has been developed.
Palladium‐Catalyzed Decarboxylative
<i>ortho</i>
‐C(sp
<sup>2</sup>
)−H Aroylation of
<i>N</i>
‐Sulfoximine Benzamides at Room Temperature
作者:Prasenjit Das、Promita Biswas、Joyram Guin
DOI:10.1002/asia.201901759
日期:2020.3.16
A palladium-catalyzed method for the decarboxylative ortho C-H acylation of N-sulfoximine benzamides is developed at room temperature. The catalytic method enables easy access to various functionalized 2-aroylaromatic carboxylic acid derivatives in good isolated yields. Based on our mechanistic studies, a Pd(II)/Pd(IV) catalytic cycle that involves aroyl radical intermediate is proposed for the reaction