| 摘要 |
Alkenylaromatics I <IMAGE> I where R1 is C1-C6-alkyl, R2 is H or C1-C10-alkyl and Ar is aryl, are prepared by reacting a vinylaromatic II <IMAGE> II with an alpha -olefin III H2C=CHR2 III in the presence of a nickel-containing catalyst system consisting of (a) a nickel(II) salt of a carboxylic acid, of an alcoholate or of a phenolate, (b) a phosphite or phosphine and (c) an organoaluminum compound V <IMAGE> V where R6 is C1-C12-alkyl, X is halogen and n is 1 or 2, or a mixture of compounds V.
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