Some 3-Substituted Rhodanines

Spectroscopic, potentiometric and thermodynamic studies of azo rhodanines and their metal complexes

“…El-Sonbati and coworkers [19] investigated the 1 H NMR spectra of some azo rhodanines and their complexes with various transition metal ions. 1 H NMR spectra showed that signal for CH (~4.42 ppm), favors formation of an intramolecular hydrogen bond with the N_N (azodye) group. Electron-withdrawing substituents of (HL 3 ) reduce the intramolecular hydrogen bond as indicated by the marked shift of the hydroxyl signal to higher field.…”

“…Azo compounds based on rhodanine were synthesized as potential medicinal preparations [1] and can also be used as analytical reagents [2]. It is known that rhodanine plays an important role in biological reactions [3,4].…”

Synthesis of deuterium‐labeled nitrosomethylethylamines

“…Acetyl Chloride-ci3 was prepared f o l l o w i n g the method o f Brown ( 6 ) The product was a yellow o i l (3.39, 46%…”

“…bp. 48-51'( 6 ) ) .N -Me t hy 1 ace t ami de-$ (5)The m i x t u r e was heated and a c e t y l chloride-c13 wasThe f r a c t i o n c o l l e c t e d a t bp. 40-47" Methylamine hydrochloride (13.59, 0.2 mol) was added t o a s o l u t i o n o f p y r i d i n e (329, 0.4 mol) i n d r y benzene (150 m l ) .…”

Potentiometric and Spectroscopic Studies of Sulfonamide Azo-Dye Complexes with some Transition Metal Ions and Uranium

“…Azo compounds of rhodanine were synthesized as potential medicinal preparations [1]. Their qualitative reactions with some elements were also reported [2,3].…”