Regioselectivity in the reactions of diphenylnitrilimine with coumarin and chromone
作者:Ahmad S. Shawali、Bahgat A. Eltawil、Hassan A. Albar
DOI:10.1016/s0040-4039(01)90203-5
日期:1984.1
The cycloaddition of diphenylnitrilimine with coumarin and chromone gave the cycloadducts 4 and 5 respectively. The structures of these products were based on elemental and spectral analyses and alternate synthesis. The orientations of the cycloaddition are interpreted in terms of FMO theory.