METHOD FOR PREPARING ALCOHOL CARBONATE USING RARE EARTH OXIDES AS CATALYSTS

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The invention relates to a method for preparing, by means of transcarbonation, a compound of formula (I), including reacting a polyol of formula (II) with an alkyl carbonate or an alkylene carbonate in the presence of a catalytic system consisting of a catalytic entity selected from among the rare earth oxides or the mixtures thereof, and optionally an inert substrate.