Process for synthesizing substituted cinnamic acid derivatives

Details Process for synthesizing substituted cinnamic acid derivatives Process for synthesizing substituted cinnamic acid derivatives

1993-06-29

1994-04-05

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

560104, 558414, C07C 6976

Patent

active

053006755

ABSTRACT:
This invention discloses a novel process for preparing cinnamic acid derivatives. The inventive process is illustrated by the synthesis of 2-ethylhexyl p-methoxycinnamate by coupling p-methoxybenzenediazonium tetrafluoroborate with 2-ethylhexyl acrylate in an alcohol solution, wherein a buffer compound such as sodium acetate is present, the coupling reaction being catalyzed by a mixture comprising a copper salt, such as cuprous chloride, and a palladium salt, such as Li.sub.2 PdCl.sub.4.

REFERENCES:
patent: 3626005 (1971-12-01), Scheben et al.
patent: 4311706 (1982-01-01), Bodor
patent: 4578507 (1986-03-01), Wada
patent: 4970332 (1990-11-01), Caskey

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