1444-57-1Relevant academic research and scientific papers
Spectral study of the reaction of functionally substituted enehydrazides with proton donors
Sarapulova,Rozinova,Rozinov,Kolbina
, p. 1266 - 1270 (2002)
Reactions of new enehydrazides, N′,N′ -dimethyl-N-vinylpropenohydrazide and N′,N′ -dimethyl-N-vinylbenzohydrazide with chloroform, phenol, and hydrogen chloride in carbon tetrachloride were studied by IR spectroscopy. In the first two cases, molecular complexes are formed between the hydrazide and proton donor. The reaction of N′,N′-dimethyl-N-vinylpropenohydrazide with HCl results in formation of dihydropyrazole derivative which exists as a tautomeric mixture of the major lactam and minor lactim forms. N′,N′ -dimethyl-N-vinylbenzohydrazide reacts with hydrogen chloride to give protonated form in which proton is localized on the amino nitrogen atom. The structure of the initial compounds and the products was analyzed in terms of AM1 quantum-chemical calculations.
Reaction of Oxalyl and Malonyl Chloride with 1,1-Dimethyl-2-substituted Hydrazides
Sarker, S. R.,Stone, D. M.,Evain, E. J.,Cooley, J. H.,Scott, B. L.,Willett, R. D.
, p. 1535 - 1540 (2007/10/02)
Recently we reported the reaction of 1,1-dimethyl-4-substituted semicarbazides with phosgene to occur with formation of several new heterocyclic ring systems.Here we report the reaction of several semicarbazides, thiosemicarbazides and related acyl substi
