Preparation of 5-acetoacetylamino-2-benzimidazolone

Details Preparation of 5-acetoacetylamino-2-benzimidazolone Preparation of 5-acetoacetylamino-2-benzimidazolone

1994-10-19

1995-12-19

McKane, Joseph K.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23524

Patent

active

054769485

ABSTRACT:
A process for preparing 5-acetoacetylamino-2-benzimidazolone by continuous reaction of 5-amino-2-benzimidazolone with diketene comprises carrying out the reaction in the presence of a water-soluble (C.sub.1 -C.sub.4)-alcohol or of a mixture of this alcohol with water at the boiling temperature.

REFERENCES:
patent: 4087610 (1978-05-01), Sahm et al.
patent: 4153798 (1979-05-01), Heise et al.

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