Process for the preparation of alkenylbenzenecarboxylic acid...

C - Chemistry – Metallurgy – 07 – C

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260/472, 260/552

C07C 49/217 (2006.01) C07C 45/68 (2006.01) C07C 69/618 (2006.01) C07C 205/56 (2006.01)

Patent

CA 1178295

Abstract Compounds of the formula I Image (I) in which p, m, Z, R, R' and Y are as defined in claim 1, can be obtained in a simple and economical manner by a novel process which comprises reacting a halide of the formula Image (II) with the corresponding acrylic acid derivative, in the presence of a base and of certain palladium catalysts, such as palladium acetate. The compounds (I), and functional derivatives prepared therefrom, are useful for the preparation of photocrosslinkable polymers, which can in particular be employed as (so-called) photoresists.

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