Solvent- and catalyst-free transamidation of unprotected glycosyl carboxamides was written by Bensalah, Fouzia Ouadah;Bil, Abed;Wittine, Karlo;Bellahouel, Salima;Lesur, David;Markovic, Dean;Laclef, Sylvain. And the article was included in Organic & Biomolecular Chemistry in 2019.Reference of 604-69-3 The following contents are mentioned in the article:
The transamidation reactions of unprotected mono- and disaccharidic carboxamides with various primary and secondary aryl, heterocyclic or aliphatic amines are described. This new method is green and atom efficient and gives good to high yields. Notably, the conditions do not require either a solvent or a catalyst and give ammonia as a single byproduct. The described coupling reaction is compatible with a variety of functional groups and was used in the synthesis of various glycosidic derivatives and biol. relevant glycolipids. A plausible reaction mechanism involving an intermol. H-bond activation of the starting carboxamides is proposed. 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: 604-69-3Reference of 604-69-3).
(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Reference of 604-69-3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics