The invention concerns a resolution method for a racemic mixture of aldehyde of formula (I). ##STR1## The aldehydes of formula I are useful in their enantiomeric form or their racemic form for preparing transition metal complexes useful as catalysts in hydroformylation reactions of olefins.

L'invenzione interessa un metodo di risoluzione per una miscela racemica di aldeide della formula (i). ## del ## STR1 Le aldeidi della formula I sono utili nella loro forma enantiomeric o nella loro forma racemica per la preparazione dei complessi del metallo di transizione utili come catalizzatori nelle reazioni di hydroformylation delle olefine.

 
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< Cleaning composition comprising a water-soluble or water-dispersible polymer

< Process for alkoxylation with a boron-containing catalyst

> Method for separating and purifying carboxylic acid derived from the direct oxidation of a hydrocarbon

> Organic sol and solid compound based on cerium oxide and an amphiphilic compound and method for preparing same

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