Verfahren zur Herstellung von N-Alkanoyl-polyhydroxyalkylaminen

摘要

N-alkanoyl-polyhydroxyalkylamines having the formula (I), in which Z stands for the polyhydroxyalkyl residue of a mono- or oligo saccharide; R<1> stands for hydrogen or C1-C8-alkyl and R<2> stands for C1-C21-alkyl are prepared by reaction of polyhydroxyalkylamines having the formula (II): Z-NH-R<1>, with carboxylic acid alkyl esters having the formula (III), in which R<3> stands for a C1-C4-alkyl residue, in the presence of a basic catalyst. For that purpose, (a) the total amount of the ester (III) is taken, is heated up to the reaction temperature and the amine (II) is precisely added thereto as a molten mass while the reaction is in progress, the resulting alcohol represented by the formula R<3>-OH being continuously distilled away; (b) the reaction is carried out at a temperature from 55 to 110 DEG C; and (c) the reaction is carried out in the absence of organic solvents.