Patent ID: 6784303
Filing Date: 2004-08-31
Classification: B01D,C07D,Y02P

Abstract:
A process for continuously preparing chromanol ester of the formula I, whereR1, R2, R3, R4, R5, R6, R7 and R8 independently of one another are hydrogen or an unsubstituted or substituted, branched or unbranched C1-C10-alkyl radical and the dashed bonds are a possible additional Câ€”C bond, by reacting continuously fed chromanol of the formula II with continuously fed an acylating agent selected from the group consisting of carboxylic acids of the formula IIIaR8-COOHâ€ƒâ€ƒIIIa and carboxylic anhydrides of the formula IIIb, whereR9 is hydrogen or an unsubstituted or substituted, branched or unbranched C1-C10-alkyl radical, and R8 is as defined above, in a reactor and continuously removing the reaction products from the reactor.