N,N '-Diphenyldithiomalonamide as Methylene Active Thioamide: A First Synthesis of Stable Michael Adducts

摘要

N,N'-Diphenyldithiomalonamide reacts with the 4-nitrobenzylidene derivative of Meldnun's acid (or with Meldrum's acid and 4-nitrobenzaldehyde) in the presence of a base to form crystalline Michael adducts. Structure of triethylammonium 2,2-dimethyl-5-(1-(4-nitrophenyl)-3-(phenylamino)-2-(phenykarbamothioyl)-3-thioxopropyl)-4-oxo-4H-1,3-dioxin-6-olate was studied by single crystal X-ray diffraction analysis.