Chemoselective N-Acylation of Indoles and Oxazolidinones with Carbonylazoles
作者:Stephen T. Heller、Erica E. Schultz、Richmond Sarpong
DOI:10.1002/anie.201203976
日期:2012.8.13
Unique reactivity: In the presence of more reactive amine and alcohol functional groups and of carboxylic acids, the chemoselective N‐acylation of indoles (see scheme) and oxazolidinones is achieved by taking advantage of the unique reactivity of carbonylazole acylating agents with catalytic amounts of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU).
Pd-Catalyzed <i>Ortho</i>-C−H Acylation/Cross Coupling of Aryl Ketone <i>O</i>-Methyl Oximes with Aldehydes Using <i>tert</i>-Butyl Hydroperoxide as Oxidant
作者:Chun-Wo Chan、Zhongyuan Zhou、Albert S. C. Chan、Wing-Yiu Yu
DOI:10.1021/ol101618u
日期:2010.9.3
Pd-catalyzed protocol for direct C−H bond acylation by cross coupling of aryl ketone oximes and aldehydes using tert-butyl hydroperoxide (TBHP) as oxidant was developed. With oximes as a directing group for the C−H activation, the coupling with aldehydes was achieved with remarkable regioselectivity. The acylationreactions exhibit excellent functional group tolerance, and both aliphatic and heteroaromatic