Iodine(<scp>iii</scp>)-mediated construction of the dibenzoxazepinone skeleton from 2-(aryloxy)benzamides through oxidative C–N formation
作者:Xuliang Guo、Daisy Zhang-Negrerie、Yunfei Du
DOI:10.1039/c5ra20258b
日期:——
Dibenzoxazepinone compounds were conveniently synthesized from 2-(aryloxy)benzamides through hypervalent iodine(iii)-mediated oxidative cyclization under mild reaction conditions.
Herein, we report a catalytic radical-Smiles rearrangement system of arene migration from ether to carboxylic acid with riboflavin tetraacetate (RFT), a readily available ester of natural vitamin B2, as the photocatalyst and water as a green solvent, being free of external oxidant, base, metal, inert gas protection, and lengthy reaction time. Not only the known substituted 2-phenyloxybenzoic acids