64269-79-0Relevant articles and documents
Process for the preparation of N,N'-carbonyldiazoles and azolide salts
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, (2008/06/13)
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′R7 or MgR8Z′ in the presence of a solvent.