Process for the preparation of substituted and unsubstituted-2,3

Details Process for the preparation of substituted and unsubstituted-2,3 Process for the preparation of substituted and unsubstituted-2,3

1990-06-15

1992-06-02

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546321, C07D21369

Patent

active

051188090

ABSTRACT:
There is provided a process for the preparation of dialkyl pyridinedicarboxylate compounds and derivatives thereof by reacting a dialkyl chloromaleate or chlorofumarate or a mixture thereof with an ammonium salt optionally in the presence of ammonia and an appropiately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.

REFERENCES:
patent: 4723011 (1988-02-01), Doehner, Jr.
patent: 4758667 (1988-07-01), Szczeparski et al.
patent: 4798619 (1989-01-01), Los
patent: 4871859 (1989-10-01), Gupton et al.
patent: 4948896 (1990-08-01), Nagao
patent: 5008392 (1991-04-01), Meier et al.
Chemical Abstracts, vol. 105, No. 23, Abstract 208,767z, p. 584, Dec. 8, 1986.

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