Synthesis of an ionic sugar-amino acid based surfactant in aqueous media was written by Esmaeilian, Nima;Dabir, Bahram;Malek, Reza Mohammad Ali;Arami, Mokhtar;Mazaheri, Firooz Mehr. And the article was included in Journal of Molecular Liquids in 2020.Safety of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate The following contents are mentioned in the article:
Micellar catalysis has been used to synthesis a sugar-amino acid based cationic surfactant (N,N,N-trimethyl-2-oxo-2-(((2R,3S,4S,5R)-3,4,5-trihydroxy-6-(tetradecyloxy)tetrahydro-2H-pyran-2-yl)methoxy)ethan-1-aminium iodide) with renewable raw materials in aqueous media. The micellar catalysis method was compared with the method that uses DMF (DMF) as solvent. The results confirm the superiority of micellar catalysis method in terms of efficiency, energy consumption and environmental issues. Common physicochem. properties of surfactants like critical micelle concentration (CMC), the min. surface area per mol. (Amin) and Krafft temperature were determined to evaluate the behavior of synthesized surfactant properties at the air-water interface. Computational chem. method (DFT (B3LYP/6-311g(d)) was conducted to calculate the dimensional properties of the surfactant to determine the shape, size and aggregation number of micelles at their CMC by an approach that uses Connolly solvent accessible area as the effective area of surfactant head groups. Dynamic light scattering method (DLS) was used to determine the size of micelles. The results of DLS tests show good agreement with the calculation method. Finally, the biodegradability of synthesized natural based cationic surfactant was studied by close bottle standard test to investigate the biodegradation of synthesized surfactant. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Safety of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate).
(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 纬-valerolactone.Safety of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics