Preparation of olefinic compounds and carboxylic derivatives the

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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562406, 568632, 585 26, 585436, 260665R, 260665G, C07C 6334

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060808888

ABSTRACT:
Arylolefinic compounds are prepared by reacting aryl halide with an olefinic compound in the presence of a polar liquid reaction medium containing (a) secondary or tertiary amine as a hydrogen halide acceptor (b) a catalyst system formed from (i) Pd or Pd(0) compound, and/or Pd(I) salt or Pd(II) salt, and (ii) a tertiary phosphine ligand, and (c) a reaction accelerating amount of water in the range of about 0.5 to about 5 weight percent of the total weight of the reaction mixture. The arylolefinic compounds can be converted to an arylcarboxylic acid by hydrocarboxylation with CO in a reaction medium freed of amine and containing water and a Pd catalyst system as above in which a copper component may be included, and which preferably includes an ether such as THF.

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