Process for producing N,N-disubstituted p-phenylenediamine deriv

Details Process for producing N,N-disubstituted p-phenylenediamine deriv Process for producing N,N-disubstituted p-phenylenediamine deriv

1994-04-19

1995-12-12

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564410, 564414, C07C20938

Patent

active

054751403

ABSTRACT:
4-Amino-3-methyl-N-ethyl-N-(.beta.-hydroxyethyl)-aniline sulfate which is used particularly as a developer for color photography can be easily produced in high yield and high quality by nitrosating N-ethyl-N-(.beta.-hydroxyethyl)-m-toluidine by use of an alkyl nitrite in a homogeneous alcohol solution containing sulfuric acid in an amount of about 0.5 to about 1 mole per mole of N-ethyl-N-(.beta.-hydroxyethyl)-m-toluidine, and then reducing the nitrosation product in an aqueous alcohol solution after or without isolation of the nitrosation product.

REFERENCES:
patent: 3624259 (1971-11-01), Galantay
patent: 4474987 (1984-10-01), Wollemann et al.
patent: 4479008 (1984-10-01), Batorewicz et al.
Berichte, 8, 616-622 (1875).

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