Process for the preparation of aryl-substituted propionic...

Details Process for the preparation of aryl-substituted propionic... Process for the preparation of aryl-substituted propionic...

C - Chemistry, Metallurgy

07

C

C07C 69/732 (2006.01) C07C 67/31 (2006.01) C07C 67/347 (2006.01)

Patent

CA 2104803

PROCESS FOR THE PREPARATION OF ARYL-SUBSTITUTED PROPIONIC ACID ESTERS Abstract of the Disclosure Disclosed is a process for the preparation of aryl- substituted propionic acid esters having the formula: Image wherein R and R1 are a C1-C12 linear or branched alkyl, a C5-C12 cycloalkyl, a C6-C12 aryl or a C7-C12 alkaryl or aralkyl, R2 is hydrogen or a C1-C20 linear or branched alkyl and R3 is a C1-C20 linear or branched alkyl, a C5-C12 oycloalkyl, a C6-C12 aryl or a C7-C20 alkaryl or aralkyl, and may b the same or different, or R1 is hydrogen, which comprises forming a reaction mixture of a phenol, at least one base catalyst and an acrylate, in the presence of 1,2-dimethoxybenzene, wherein the acrylate is added at once or over a period of time from 5 to 60 minutes at atmospheric pressure. The process results in excellent yields of the desired product with good rates of conversion.

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