2,3-Diarylquinoxaline directed mono ortho-aroylation via cross-dehydrogenative coupling using aromatic aldehydes or alkylbenzenes as aroyl surrogate
作者:Sourav Kumar Santra、Arghya Banerjee、Bhisma K. Patel
DOI:10.1016/j.tet.2014.02.034
日期:2014.4
directed mono ortho-aroylation protocol has been developed using aromaticaldehydes or alkybenzenes as aroyl surrogates. Out of the four available ortho sp2 C–H bonds in the two aryl rings of 2,3-diarylquinoxaline one of the C–H bond is selectively ortho-aroylated. The reaction proceeds via the aroyl radical path in the case of aromaticaldehydes while the alkylbenzenes follow either an aroyl radical or a