A convenient, versatile, and regiospecific synthesis of functionalized 1, 3- diarylisobenzofurans has been developed. It involves chemoselective addition of arylmagnesium reagents to the aldehyde function of o-aroylbenzaldehydes, themselves readily obtained by lead tetraacetate oxidation of N-aroylhydrazones of salicylaldehydes. Various functional groups, including nitro, iodo, or ester functionalities, have thus been ...
[Meng; Sah Science Reports of National Tsing Hua University, Series A: Mathematical, Physical, and Engineering Sciences, 1934 , vol. <A> 2, p. 347,350]