1040-14-8Relevant academic research and scientific papers
Tetrazole derivatives. 25. Investigation of the synthesis of 1-(5-tetrazolyl)-3,5-diphenylleucoverdazyl. Structure and some properties of the accompanying product - 1,3,7,9-tetraphenyl-5-oxo-5H-1,2,4-triazolo[3′,4′:5,1]imidazo[4,3-c] -1,2,4-triazole
Shchipanov,Klyuev
, p. 516 - 522 (1981)
In the reaction of 1,3-diphenyl-5-(5-tetrazolyl)formazan with formaldehyde, in addition to a leucoverdazyl, one can obtain 1,3-diphenyl-1,2,4-triazole and 1,3,7,9-tetraphenyl-5-oxo-5H-1,2,4-triazolo[3′,4′:5,1]imidazo[4,3-c]-1,2,4-triazole. The structure of the latter was established from data from the mass spectrum and the 1H and 13C NMR, UV, and IR spectra, as well as from the products of alcoholysis of this compound, which leads to 1,3-diphenyl-1,2,4-triazole and 1,3-diphenyl-5-carbethoxy-1,2,4-triazole. According to the data from the PMR spectra, the leucoverdazyl displays prototropic tautomerism due to the NH proton of the tetrazine ring.
REACTION OF 2,4,6-TRIPHENYLVERDAZYL WITH TRIFLUOROMETHYLSULFONYLCARBETHOXYDIBROMOMETHANE
Tomilenko, E. I.,Ogoiko, P. I.,Staninets, V. I.
, p. 1226 - 1228 (2007/10/02)
An unusual acylation of 2,4,6-triphenylverdazyl by trifluoromethylsulfonylcarbethoxydibromomethane in benzene has been discovered leading to 1-ethoxalyl-2,4,6-triphenyl-1,2,3,4-tetrahydro-sym-tetrazine (1-ethoxalyl-2,4,6-triphenylleukoverdazyl).
