Process for the manufacture of 5-acetoacetylamino-benzimidazolon

Details Process for the manufacture of 5-acetoacetylamino-benzimidazolon Process for the manufacture of 5-acetoacetylamino-benzimidazolon

1977-03-22

1979-05-08

Raymond, Richard

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23526

Patent

active

041537980

ABSTRACT:
When continuously reacting an aqueous solution of 5-aminobenzimidazolone-(2) or a salt thereof with diketene then 5-acetoacetylamino-benzimidazolone is obtained in a smooth and safe reaction without foaming. The product results in high space-time yield and excellent quality.

REFERENCES:
patent: 1982675 (1934-12-01), Law
patent: 2152132 (1939-03-01), Boese
patent: 3555003 (1971-01-01), Ribka
patent: 3963694 (1976-06-01), Mory et al.
patent: 4087610 (1978-05-01), Sahm et al.

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