METHOD FOR PRODUCING SURFACE-ACTIVE SUBSTANCES BASED ON N-ACYLAMIN ACID WITH APPLICATION OF SURFACE-ACTIVE SUBSTANCES BASED ON N-ACYLAMIN ACID OR CORRESPONDING ANHYDRIDES IN ACCIDENTS

摘要

1. A method for producing N-acylamino acid-based surfactants of formula I, formula I, wherein R is selected from a C-C alkyl group, R is selected from H, C-C alkyl, R is selected from all groups at the α-carbon atom of natural amino acids, R is selected from COOX, CH-SOX, X is selected from Li, Na or K; the process comprises the steps of A) producing fatty acid chlorides by halogenating the fatty acids with thionyl chloride in the presence of a catalytic amount of the same or different N-acylamino acid-based surfactant of the formula I or anhydrides t the same surfactant of formula II, formula II, where R represents a C-C 1-6 alkyl group, R 1 represents H, C 1 -C 6 alkyl, R 1 represents all groups at the α-carbon atom of natural amino acids, n is from 0 to 4, X represents C, SO, and B) the reaction of the fatty acid chloride from step (A) with an amino acid in the presence of a base under the usual Schotten-Baumann aqueous conditions. 2. A method according to claim 1, wherein the catalytic amount of the compounds of formula I and formula II is from 0.05 to 0.5% by weight of a fatty acid. The method according to claim 1, wherein the amino acids used in the synthesis of compounds of formula I are selected from naturally occurring α-amino acids. The method of claim 3, wherein naturally occurring α-amino acids are selected from glycine, alanine, valine, leucine, isoleucine, methionine, proline, cysteine, phenylalanine, tyrosine, tryptophan, arginine, lysine, histidine, aspartic acid, glutamic acid, serine, threonine, aspergin and glutamine. 5. A method according to claim 1, wherein the amino acids used in the synthesis of compounds of formula I are selected from non-naturally occurring amino acids and mixtures of stereoisomers. The method of claim 5, wherein