Method for the production of n,n'-carbonyl diazoles

Details Method for the production of n,n'-carbonyl diazoles Method for the production of n,n'-carbonyl diazoles

C - Chemistry, Metallurgy

07

D

C07D 233/61 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2338631

The invention concerns a method for the production of N,N'-carbonyl diazoles by reacting azoles with phosgene in a solvent, wherein the azole and the phosgene are introduced into an aromatic solvent dehydrated by distillation at a doses such that 1 mol azole is introduced at the same time as 01.17 to 0.34 mol of phosgene is dosed. The invention also describes special advantageous possibilities for processing the reaction mixture.

L'invention concerne un procédé pour la préparation de N,N'-carbonyldiazoles par réaction d'azoles avec du phosgène dans un solvant, selon lequel on introduit, dans un solvant aromatique déshydraté par distillation, une dose de 1 mole d'azole et en même temps une dose de 0,17 à 0,34 mole de phosgène. On décrit également des possibilités particulièrement avantageuses pour le retraitement du mélange de réaction.

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