Process for preparing substituted 2-cyanocinnamic esters

Details Process for preparing substituted 2-cyanocinnamic esters Process for preparing substituted 2-cyanocinnamic esters

1994-04-22

1995-09-19

Brust, Joseph Paul

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

Organic compounds

Nitriles

C07C25330

Patent

active

054516943

ABSTRACT:
In the preparation of substituted 2-cyanocinnamic esters by the Knoevenagel condensation of cyanoacetic esters and carbonyl compounds, the reaction times for obtaining high yields can be considerably reduced by using C.sub.3 -C.sub.6 -monocarboxylic acids and ammonium compounds as catalysts.

REFERENCES:
patent: 2623060 (1952-12-01), Cragoe
patent: 3644466 (1972-02-01), Strobel et al.
patent: 4178303 (1979-12-01), Lorenz et al.
J. Org. Chem., vol. 15, pp. 381-390 (1950); "The Synthesis of .alpha.,.alpha.-disubstituted Succinic Acids . . . "; Cragoe, et al.
Organic Reactions, vol. 15, pp. 204, 238, 239, 265 & 414; Chapter 2, "The Knoevenagel Condensation", Jones, (No date).

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