Process for the preparation of N,N'-carbonyldiazoles and azolide salts

摘要

This invention relates to the preparation of N,N'-carbonyldiazoles in a particularly advantageous manner by reacting corresponding azolide salts with phosgene in an aromatic compound or an ether as solvent. The azolide salts are preferably prepared by a novel process from an azole that is reacted with a compound of the formula M'R<7 >or MgR<8>Z' in the presence of a solvent.