abstract |
The present invention relates to a process for the preparation of 5-monosubstituted and 1,5-disubstituted tetrazole derivatives, wherein the reaction medium contains at least one ionic liquid, wherein the anion and / or cation of the ionic liquid is a Brønsted acid or the anion of derived from a Lewis acid, and the use of ionic liquids in the preparation of Tetrazolderivaten. |