84044-62-2Relevant academic research and scientific papers
SYNTHESIS AND STRUCTURE OF 1-METHYL-2,3-DIHYDRO-1,2,4-TRIAZOLIUM SALTS AND THEIR FREE BASES
Pinson, V. V.,Khrustalev, V. A.,Zelenin, K. N.,Matveeva, Z. M.
, p. 1170 - 1176 (2007/10/02)
1-Methyl-2,3-dihydro-1,2,4-triazolium iodides can be obtained by reacting methylhydrazones with S-methylthioamide hydriodides, by condensing 2-methylamidrazone hydriodides with aldehydes and ketones, or by reacting methyl iodide with 1-alkylidene(or arylidene)benzamidrazones.In solutions these salts are capable of undergoing tautomerism to 1-alkylidene(or arylidene)-2-methylamidrazone hydriodides.The influence of the structural factors on the position of the tautomeric equilibrium has been studied.The free bases obtained by neutralization of the respective salts by an alkali metal hydroxides are heretofore underscribed 1-alkylidene(or a rylidene)-2-methylhydrazidoimines or 4-triazolines, depending on their structure.Under the action of oxygen, these compounds are readily oxidized to substituted 1-methyl-1,2,4-triazoles with heating.
SYNTHESIS AND RING-CHAIN TAUTOMERISM OF SALTS OF ALKYLIDENE(ARYLIDENE) DERIVATIVES OF AMIDRAZONES
Khrustalev, V. A.,Sergutina, V. P.,Zelenin, K. N.,Pinson, V. V.
, p. 978 - 982 (2007/10/02)
A number of salts of alkylidene(arylidene) derivatives of amidrazones was obtained by the reaction of S-methylthioamidium iodides with hydrazones of monocarbonyl compounds.According to the 1H and 13C NMR data, these compounds in solutions are capable of ring-chain tautomerism of the 1-alkylideneamidrazone-1,2,4-triazoline type.The position of the equilibrium is determined chiefly by steric interactions of the substituents attached to the C-N2 bond.
