Novel pyrimidine derivatives were prepared from the reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with thiourea or guanidine in the presence of ethyl-diisopropylamine in ethanol at reflux, and also some 5-substituted pyrimidine-2-thiols has been used for the synthesis of novel disulfane compounds. Infrared, 1 H NMR, 13 C NMR, and mass spectral data confirm the molecular structures of the newly synthesized compounds. The ultraviolet spectral behavior of these compounds was examined in DMSO and the ƛ max of these compounds was studied.
An efficient route for the synthesis of novel Schiff bases from the condensation reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with diverse aminophenols in the presence of triethylamine in EtOH at reflux is described.
Synthesis of new zwitterionic derivatives via the reaction of 2-substituted 1,3-bis(dimethylamino)-trimethinium salts with malononitrile or ethyl cyanoacetate in the presence of Et3N in ethanol at reflux.
Novel derivatives of Schiff bases with diazene bonds and six new 2,5‐disubstituted pyrimidine derivatives were synthesized by reaction of 2‐substituted trimethinium salts with 4‐aminoazobenzene or benzamidine hydrochloride, respectively, by a simple method and using inexpensive reagents. The purity and molecular structure of the new compounds were determined by elemental analysis, mass spectrometry, infrared, ultraviolet/visible, as well as proton nuclear magnetic resonance (1H NMR) and carbon‐13 nuclear magnetic resonance (13C NMR) spectroscopy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.