Quaternary salts from 2-(methylpyridyl or quinolyl)benz-X-azoles and related polymethine dyes
作者:Ermanno Barni、Piero Savarino
DOI:10.1002/jhet.5570150104
日期:1978.1
The quaternisation of 2-(methylpyridyl or quinolyl)benz-X-azoles mainly leads to the corresponding pyridinium and quinolinium salts, from which polymethine dyes are prepared. The electronic spectra and the methyl protons chemical shifts are briefly discussed.