Process for the preparation of cinnamic acid derivatives

Details Process for the preparation of cinnamic acid derivatives Process for the preparation of cinnamic acid derivatives

1993-03-31

1994-08-02

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

558401, 562495, 564182, C07C 6976

Patent

active

053347501

ABSTRACT:
Cinnamic acid derivatives, in particular 2-ethylhexyl p-methoxycinnamate and 2-isoamyl p-methoxycinnamate, are prepared avoiding particular effort for workplace hygiene and ecology by using bromoaromatic and acrylic acid derivatives in the presence of palladium catalysts and a large excess of phosphane (based on the palladium), in the presence of an inorganic base and in the presence of alcohols and/or a phase transfer catalyst.

REFERENCES:
patent: 4156785 (1979-05-01), Prange et al.
patent: 4564479 (1986-01-01), Spencer
patent: 4713473 (1987-12-01), Schudel et al.
patent: 4970332 (1990-11-01), Casvcey
patent: 5187303 (1993-02-01), Eisenstadt et al.

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