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US 4,791,210 AGranted
Process for the production of 5-methyltetrazole
AssigneeDynamit Nobel Aktiengesellschaft
InventorsGunter Bison, Johannes Schlupp, Josef Winterscheid, Klaus Thewalt
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Abstract
5-Methyltetrazole can be produced by reacting acetonitrile with an alkali azide or ammonium azide in high purity and a yield of above 98% by using a trialkyl amine as the solvent or suspension agent and by using the associated hydrochloride of the amine as the catalyst.
Claims8
A process for the production of 5-methyltetrazole of the formula:
- ##STR2## which comprises reacting acetonitrile with an ammonium or alkali azide at reaction temperatures of 90.degree.-160.degree. C. in the presence of a trialkylamine solvent and an HCl addition salt thereof as a catalyst, said trialkylamine having alkyl groups containing 1 to 4 carbon atoms and said salt catalyst being a hydrochloride of a trialkylamine having alkyl groups containing 2 to 4 carbon atoms;
- the salt catalyst being present in equimolar quantity or in an excess of 0.02-10 mol-%, based on the azide.
Dependencies are inferred from the claim text.