is there any suitable method or synthetic way to maximum conversion of 1H-tetrazole to 2H-tetrazole.
1H-tetrazole is commercially available but 2H-tetrazole was not. The only way is 1H-tetrazole and its tautomer is 2H-tetrazole.
Dear Uppari Venkataramudu many thanks for asking this very interesting technical question. You can find some important basic information about tetrazole and its tautomeric forms already in the respective Wikipedia entry at:
https://en.wikipedia.org/wiki/Tetrazole
It is stated there that in the solid state the equilibrium between the the two tautomeric forms lies on the side of 1H-tetrazole. This means that you cannot buy 2H-tetrazole as a stable solid. In the gas-phase, 2H-tetrazole is the dominationg form:
Tautomerism and Thermal Decomposition of Tetrazole: High-Level ab Initio Study
Article Tautomerism and Thermal Decomposition of Tetrazole: High-Lev...
and
Tautomeric equilibrium and hydrogen shifts of tetrazole in the gas phase and in solution
Article Tautomeric equilibrium and hydrogen shifts of tetrazole in t...
You can, however, prepare substituted derivatives of 2H-tetrazole:
https://www.organic-chemistry.org/synthesis/heterocycles/2H-tetrazoles.shtm
Good luck with your work! 👍
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