| 摘要 |
PCT No. PCT/EP93/02852 Sec. 371 Date Apr. 24, 1995 Sec. 102(e) Date Apr. 24, 1995 PCT Filed Oct. 15, 1993 PCT Pub. No. WO94/10130 PCT Pub. Date May 11, 1994The preparation von N-alkanoyl-polyhydroxyalkylamines I in which <IMAGE> (I) in which Z stands for the polyhydroxyalkyl radical of a monosaccharide or oligosaccharide, R1 denotes hydrogen or C1-C8 alkyl and R2 denotes C1-C21 alkyl, by the reaction of polyhydroxyalkylamines of the general formula IIZ-NH-R1(II),with alkyl carboxylates of the general formula III <IMAGE> (III) in which R3 denotes a C1-C4 alkyl radical, in the presence of a basic catalyst, in which (a) all of the ester III is placed in the reactor and is heated to the reaction temperature, and the amine II is metered in in the form of a melt while the reaction proceeds, while alcohol R3-OH formed is continuously removed by distillation, (b) the reaction is carried out at a temperature of from 55 DEG to 110 DEG C., and (c) the reaction is carried out in the absence of organic solvents.
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