Preparation of 2-cyano-3-aminoacrylonitrile derivatives

Details Preparation of 2-cyano-3-aminoacrylonitrile derivatives Preparation of 2-cyano-3-aminoacrylonitrile derivatives

1989-02-10

1991-09-10

Brust, Joseph Paul

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

Organic compounds

Nitriles

544163, 544208, 544224, 544241, 544402, 546230, 546330, 548437, 548477, 548550, 548578, 549 74, C07C25330

Patent

active

050475703

ABSTRACT:
3-Amino-2-cyanoacrylonitrile derivatives of the formula ##STR1## where R is substituted C.sub.1 -C.sub.10 -alkyl, substituted or unsubstituted styryl, substituted or unsubstituted phenyl or aromatic heterocyclyl, are prepared by treating a nitrile in an inert organic diluent at from 0.degree. to +30.degree. C. with a substituted or unsubstituted C.sub.1 -C.sub.6 -alkanol in the presence of a hydrogen halide and reacting the resulting iminoester hydrohalide directly or after isolation with malodinitrile in an inert organic diluent at from 20.degree. to 100.degree. C. in the presence of a base.

REFERENCES:
patent: 3116319 (1963-12-01), Creighton et al.
patent: 3694484 (1972-09-01), Cresswell et al.
patent: 4540791 (1985-09-01), Cassar et al.
patent: 4667051 (1987-05-01), Schefczik
Baddiley et al.; J. Chem. Soc. (1943), pp. 386-387.
Patent Abstracts of Japan, unexamined applications, C Field, Band 6, Nr. 139; Jul. 28, 1982.
J. Chem. Soc. (1943), pp. 388-390; Kenner et al.
Synthesis (1981), pp. 130-133; Celerier et al.
Dyes and Pigments 3 (1982), pp. 81-121; Weaver et al.

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