Chemoselective generation of acyl phosphates, acylium ion equivalents, from carboxylic acids and an organophosphate ester in the presence of a Brønsted acid
作者:Akinari Sumita、Yuko Otani、Tomohiko Ohwada
DOI:10.1039/c6cc09618b
日期:——
Reactions of an organophosphate ester with carboxylicacids proceeded smoothly and chemoselectively in the presence of a Bronsted acid, affording acyl phosphate intermediates, leading to formation of various functional aromatic ketones.
A novel, one-pot, three-step synthetic method to prepare 2-aminobenzophenones from 2-alkynyl arylazides has been disclosed. This reaction is catalyzed by palladium to form 3-hydroxy-3-phenylindolin-2-ones, which is followed by hydrolysis of amide bonds and copper-catalyzed decarboxylation to generate 2-aminobenzophenones. The desired products are afforded in moderate to good yields under mild reaction