Switching azonaphthols containing a side chain with limited flexibility. Part 1. Synthesis and tautomeric properties
作者:Vanya B. Kurteva、Liudmil M. Antonov、Daniela V. Nedeltcheva、Aurélien Crochet、Katharina M. Fromm、Rositsa P. Nikolova、Boris L. Shivachev、Maya S. Nikiforova
DOI:10.1016/j.dyepig.2011.07.013
日期:2012.3
conversion to amides and diazo coupling. It was shown that the position of the tautomeric equilibrium in solution strongly depends on the solvent in both UV and NMR concentration scale. The compounds exist as pure enol forms in chloroform and hydrocarbons, while in polar solvents (acetone, acetonitrile, alcohols) a tautomeric mixture is observed. According to the quantum-chemical calculations the aggregation