Manufacture of dimethylaminobenzenecarboxylic acid esters

Details Manufacture of dimethylaminobenzenecarboxylic acid esters Manufacture of dimethylaminobenzenecarboxylic acid esters

1974-06-05

1977-01-11

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9900

Patent

active

040026647

ABSTRACT:
Dimethylaminobenzenecarboxylic acid esters are produced by reaction of nitrobenzenecarboxylic acid esters with formaldehyde and hydrogen under pressure in the presence of a hydrogenation catalyst containing metals of atomic numbers 24 to 29 and of a weak acid, at temperatures from 35.degree. to 150.degree. C. The products are starting materials for the synthesis of dyes, especially of crystal violets, and of reactive dyes and pesticides.

REFERENCES:
pearson, D. E. et al., Journal American Chemical Society, vol. 73 (1951), p. 864 relied on.
Campbell et al., Australia Journal of Chemistry, vol. 23 (1970) pp. 203 and 204.

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