Process for the manufacture of n,n-(dibenzohexatrienylene)...

Details Process for the manufacture of n,n-(dibenzohexatrienylene)... Process for the manufacture of n,n-(dibenzohexatrienylene)...

C - Chemistry, Metallurgy

07

D

260/241.38

C07D 223/26 (2006.01) C07D 223/22 (2006.01)

Patent

CA 1311476

21489-7366 ABSTRACT N,N-(Dibenzohexatrienylene)ureas can be manufactured in a smooth one-step reaction by reacting corresponding N,N-(di- benzohexatrienylene)amines in a temperature range of from approximately 0°C to approximately 120°C in an organic solvent or a mixture of organic solvents, optionally in the presence of an acidic agent, with cyanic acid which is optionally prepared in situ.

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