Tandem Sequence of Phenol Oxidation and Intramolecular Addition as a Method in Building Heterocycles
作者:Maxim O. Ratnikov、Linda E. Farkas、Michael P. Doyle
DOI:10.1021/jo302002j
日期:2012.11.16
A tandem phenol oxidation–Michael addition furnishing oxo- and -aza-heterocycles has been developed. Dirhodium caprolactamate [Rh2(cap)4] catalyzed oxidation by T-HYDRO of phenols with alcohols, ketones, amides, carboxylic acids, and N-Boc protected amines tethered to their 4-position afforded 4-(tert-butylperoxy)cyclohexa-2,5-dienones that undergo Brønsted acid catalyzedintramolecular Michael addition