Abstract
11-Substituted 14H-benz[4,5]isoquinolino[2,1-a]perimidin-14-ones were synthesized, and their spectra were studied. In contrast to electron-acceptor substituents, electron-donor substituents have little effect on the shift of the absorption maxima. In the reactions of 1,8-naphthalenediamine with various 4-substituted naphthalic anhydrides, electron-donor substituents have little effect on the shift of the absorption maxima. In the reactions of 1,8-naphthalenediamine with various 4-substituted naphthalic anhydrides, electron-donor substituents lead primarily to 10-substituted naphthaloperinones, whereas electron-acceptor substituents lead primarily to 11-substituted naphthaloperinones. An assumption regarding the mechanism of the formation of 10- and 11-substituted naphthaloperinones is expressed.
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