Process for producing alpha-monochloroacetoacetic acid monomethy

Details Process for producing alpha-monochloroacetoacetic acid monomethy Process for producing alpha-monochloroacetoacetic acid monomethy

1978-11-22

1980-11-25

Demers, Arthur P.

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

Organic compounds

Amino nitrogen containing

C07C10334, C07C 9702

Patent

active

042358183

ABSTRACT:
A process for the production of .alpha.-monochloroacetoacetic acid monomethylamide is disclosed which comprises chlorinating acetoacetic acid monomethylamide in the presence of urea and a water-soluble alkali metal salt or ammonium salt at a temperature of between -20.degree. and +10.degree. C. with 80-95% of the equivalent amount of chlorine; neutralizing the reaction mixture; separating the precipitated .alpha.-monochloroacetoacetic acid monomethylamide; and partially recycling the mother liquor back into the chlorination process. .alpha.-Chloroacetoacetic acid monomethylamide is a valuable intermediate for producing insecticidal active compounds, for example dimethyl-1-methyl-2-(methylcarbamoyl)-vinyl phosphate.

REFERENCES:
patent: 3258394 (1966-06-01), Hall et al.
patent: 3284500 (1966-11-01), Tieman
patent: 3449421 (1969-06-01), Pearson
patent: 3483252 (1969-12-01), Beriger
patent: 3917694 (1975-11-01), Reinink

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