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

1992-05-01

1994-02-15

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

052868680

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 appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.

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patent: 4871859 (1989-10-01), Gupton et al.
patent: 4948896 (1990-08-01), Nagao
patent: 4973695 (1990-11-01), Yamashita et al.
patent: 5008392 (1991-04-01), Meier et al.
patent: 5118809 (1992-06-01), Cevasco et al.
Chem. Ber., G. Domschke, vol. 98(9), pp. 2920-2925, 1965.

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