摘要 |
An improvement in the reaction of olefin with aldehyde, and optionally, carboxylic acid, in the liquid phase in the presence of a catalytically effective amount of strong acid to provide a 1,3-difunctional compound or a mixture of 1,3-difunctional compounds is provided by carrying out the aforesaid reaction in the further presence of a co-catalyst selected from the group consisting of antimony oxide, bismuth oxide, antimony salt, bismuth salt and mixtures thereof.
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