PAUL CHIRITA, IULIEAN VASILE ASAFTEI, ION SANDU, LAURA GABRIELA SARBU, VASILE VALERIU LUPU MESOIONIC 4-(2-DIALKYLAMINO-1,3-DITHIOL-2-YLIUM-4-YL)PHENOLATES
New mesoionic 4-(2-dialkylamino-1,3-dithiol-2-ylium-4-yl)phenolates have been obtained from the corresponding 1,3-dithiolium salts under weak basic conditions. The 1,3-dithiolium salts have been synthesized by the cyclocondensation of 1-(4-hydroxyphenyl)-1-oxaethan-2-yl dithiocarbamates. The latter compounds have been obtained from the reaction of the 2-bromo-1-(4-hydroxyphenyl)ethan-1-one with various salts of dithiocarbamic acids. UV-Vis investigations proved the intramolecular charge transfer for the mesoionic 1,3-dithiolium phenolates.