2421-33-2Relevant academic research and scientific papers
Use of n-acylamino acid compounds as texturing agents
-
, (2008/06/13)
Use of at least one compound of formula (I): in which R represents the characterizing chain of a saturated or unsaturated, linear or branched fatty acid, comprising from 16 to 22 carbon atoms, represents the characterizing chain or cyclic radical of an amino acid, R2represents a hydrogen atom or an alkyl radical comprising from 1 to 3 carbon atoms, or the topically acceptable salts thereof, as texturing agents, it being understood that the amino acid characterized by R1is not lysine, hydroxylysine or arginine. Novel compositions Application in cosmetics.
A comparative study on the surface activity and micellar behaviour of some N-acylamino acid based surfactants
George, Alex,Modi, Jayesh,Jain, Nirmesh,Bahadur, Pratap
, p. 985 - 992 (2007/10/03)
N-Hexadecanoyl derivatives of amino acids viz alanine, sarcosine, glycine, aspartic acid, glutamic acid and dioctanoyl derivative of lysine and their sodium salts have been synthesised and characterised spectrophotometrically and by elemental analysis. Activation energy for thermal decomposition of these surfactants has been obtained using thermogravimetric analysis. Studies on surface activity and micellization of these N-acylamino acid based surfactants using surface tension and dye-solubilization techniques reveal specific relationship between their structural characteristics and solution behaviour. The observed trend of CMC for these amphiphiles are explained in terms of varying hydrophobicity with changes in their molecular architecture. Dioctanoyllysinate displays high CMC value by virtue of two short C8-chains compared to the single and more hydrophobic C16-chain of the other surfactants. Hexadecanoylaspartate and glutamate, with their hydrophilicity enhanced by the presence of two carboxylate head groups, also display relatively higher CMCs. Solubilizing properties for these surfactants follow an order similar to that observed for their CMCs. Areas per molecule calculated indicate the influence of molecular structure on the packing of these surfactants at the air-water interface.
Vinyl carboxylate an acylating reagent for selective acylation of amines and diols
Chen,Chen,Chen,Wang
, p. 3583 - 3584 (2007/10/02)
Vinyl group of vinyl alkylate (C=2 or 16) and vinyl benzoate have been found to be a good leaving group in acylation of alcohols (40-50% yield) and amines (in 60-90% yield).
Melting Behaviour of Some Pure N-Acyl Amino Acids and Peptides
Iyer, Venkataraman N.,Sheth, Geeta N.,Subrahmanyam, V. V. R.
, p. 856 - 859 (2007/10/02)
Fifty three tlc pure N-acyl amino acids were synthesized by Schotten-Baumann reaction from glc pure odd and even chain fatty acids and chromatographycally homogeneous amino acids and a few N-acyl peptides were prepared through the carboxylic carbonic anhydride intermediates.The melting points are reported and discussed.
