Method for producing acetoacetic acid arylamides

Details Method for producing acetoacetic acid arylamides Method for producing acetoacetic acid arylamides

2006-04-12

2011-10-04

Davis, Brian J (Department: 1621)

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

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

08030519

ABSTRACT:
Acetoacetic acid arylamides are continuously produced from diketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.

REFERENCES:
patent: 5523486 (1996-06-01), Mack et al.
patent: 6586631 (2003-07-01), Balmer et al.
patent: 2519036 (1976-11-01), None
patent: 0648738 (1995-04-01), None
patent: 0945430 (1999-09-01), None
Ullmann's Encyclopedia Of Industrial Chemistry, 5thEd., vol. 15, p. 71, (1990).

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