I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 22913-24-2, help many people in the next few years.Application In Synthesis of Methyl benzo[b]thiophene-2-carboxylate
Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter. Application In Synthesis of Methyl benzo[b]thiophene-2-carboxylate, C10H8O2S. A document type is Article, introducing its new discovery., Application In Synthesis of Methyl benzo[b]thiophene-2-carboxylate
A biocatalytic method for the chemoselective aerobic oxidation of aldehydes to carboxylic acids
Herein, we present a study on the oxidation of aldehydes to carboxylic acids using three recombinant aldehyde dehydrogenases (ALDHs). The ALDHs were used in purified form with a nicotinamide oxidase (NOx), which recycles the catalytic NAD+ at the expense of dioxygen (air at atmospheric pressure). The reaction was studied also with lyophilised whole cell as well as resting cell biocatalysts for more convenient practical application. The optimised biocatalytic oxidation runs in phosphate buffer at pH 8.5 and at 40 C. From a set of sixty-one aliphatic, aryl-Aliphatic, benzylic, hetero-Aromatic and bicyclic aldehydes, fifty were converted with elevated yield (up to >99%). The exceptions were a few ortho-substituted benzaldehydes, bicyclic heteroaromatic aldehydes and 2-phenylpropanal. In all cases, the expected carboxylic acid was shown to be the only product (>99% chemoselectivity). Other oxidisable functionalities within the same molecule (e.g. hydroxyl, alkene, and heteroaromatic nitrogen or sulphur atoms) remained untouched. The reaction was scaled for the oxidation of 5-(hydroxymethyl)furfural (2 g), a bio-based starting material, to afford 5-(hydroxymethyl)furoic acid in 61% isolated yield. The new biocatalytic method avoids the use of toxic or unsafe oxidants, strong acids or bases, or undesired solvents. It shows applicability across a wide range of substrates, and retains perfect chemoselectivity. Alternative oxidisable groups were not converted, and other classical side-reactions (e.g. halogenation of unsaturated functionalities, Dakin-Type oxidation) did not occur. In comparison to other established enzymatic methods such as the use of oxidases (where the concomitant oxidation of alcohols and aldehydes is common), ALDHs offer greatly improved selectivity.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 22913-24-2, help many people in the next few years.Application In Synthesis of Methyl benzo[b]thiophene-2-carboxylate
Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem