Process for producing .alpha.-chloroacetoacetic acid monomethyla

Details Process for producing .alpha.-chloroacetoacetic acid monomethyla Process for producing .alpha.-chloroacetoacetic acid monomethyla

1989-10-16

1991-02-12

Elmore, Carolyn S.

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

Organic compounds

Amino nitrogen containing

C07C23580, C07C23124

Patent

active

049925857

ABSTRACT:
In the production of .alpha.-chloroacetoacetic acid monomethylamide by reaction of chlorine with acetoacetic acid monomethylamide in an aqueous medium at temperature of -20 to +10.degree. C. in the presence of urea and alkali metal salts, neutralization of the reaction mixture, separation of solid .alpha.-chloroacetoacetic acid monomethylamide and feeding back of the mother liquor into the next batch, yield and purity of the product are improved by extracting the mother liquor obtained each time after the separation of .alpha.-chloroacetoacetic acid monomethylamide, before the mother liquor is fed back into the next batch, with an inert solvent immiscible with water.

REFERENCES:
patent: 3483252 (1969-12-01), Beriger
patent: 3917694 (1975-11-01), Reinink
patent: 4207259 (1980-06-01), Kunstle et al.
patent: 4235818 (1980-11-01), Dousse et al.

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