DIHYDRONAPHTHALENONE CARBOXYLATES - SPECTRAL CHARACTERISTICS AND STRUCTURE

The absorption and luminescence characteristics of a group of newly sy nthesized methyl esters of 2-alkyl (p-substituted-aryl) - aminomethyle ne-3,4-dihydro-1(2 H)-naphthalenone-4-carboxylic acids have been inves tigated. The studied compounds may exist in three tautomeric forms. On the basis of comparison of their electronic spectra to those of simil ar substances, the observed substituent effect on the position of the UV VIS absorption bands, the IR spectra and the results of PPP-SCF-CI quantum-chemical calculations it is concluded that the keto tautomer p redominates in solution.