Synthesis of<i>ortho</i>-Acylphenols through the Palladium-Catalyzed Ketone-Directed Hydroxylation of Arenes
作者:Fanyang Mo、Louis J. Trzepkowski、Guangbin Dong
DOI:10.1002/anie.201207479
日期:2012.12.21
Ketone in charge: A formal ketone‐directed palladium‐catalyzed ortho‐hydroxylation of arenes has been developed as an effective approach to access o‐acylphenols from simple arylketones. A Pd‐catalyzed oxidative ortho‐carbonylation reaction using ketone directing groups to access a ketal–lactone motif is also demonstrated. The ubiquity and versatile nature of ketones make these methods attractive. BTI=PhI(TFA)2;
Broadening the catalyst and reaction scope of regio- and chemoselective C–H oxygenation: a convenient and scalable approach to 2-acylphenols by intriguing Rh(ii) and Ru(ii) catalysis
catalyzed C–H oxygenation of aryl ketones and other arenes has been developed for the facilesynthesis of diverse functionalized phenols. The reaction demonstrates excellent reactivity, regio- and chemoselectivity, good functional group compatibility and high yields. The practicality of this method has been proved by gram-scale synthesis of a few different 2-acylphenols. Its utility has been well exemplified