发明申请
US20050272937A1 Process for preparing N,N'-carbonyldiazoles 失效
制备N,N'-羰基二唑的方法

Process for preparing N,N'-carbonyldiazoles
摘要:
A process is provided for preparing N,N′-carbonyldiazoles by reacting azoles with phosgene in halogenated aliphatic hydrocarbon solvents, the entirety of the azole for reaction being introduced in the solvent, followed by the addition of phosgene.
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