27829-72-7Relevant articles and documents
A convenient synthesis of amino acid-derived precursors to the important wine aroma 3-sulfanylhexan-1-ol (3SH)
Barker, David,Duhamel, Nina,Fedrizzi, Bruno,Jelley, Rebecca E.
, (2020)
A convenient, straightforward synthesis of the important amino acid-derived aroma precursors, 3-S-cysteinylhexan-1-ol (Cys-3SH) and 3-S-glutathionylhexan-1-ol (GSH-3SH) from commercially available butan-1-ol is reported. The versatility of this approach to include deuterium labelling is also demonstrated.
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YAMADA et al.
, p. 3431 (1977)
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Synthesis of alkyl sulfonic acid aldehydes and alcohols, putative precursors to important wine aroma thiols
Duhamel, Nina,Piano, Federico,Davidson, Samuel J.,Larcher, Roberto,Fedrizzi, Bruno,Barker, David
, p. 1728 - 1731 (2015)
The synthesis of the low molecular weight sulfonic acids, 2-methyl-4-oxopentane-2-sulfonic acid, 1-hydroxyhexane-3-sulfonic acid, 1-oxohexane-3-sulfonic acid and 1-hydroxyhexane-1,3-disulfonic acid from trans-2-hexenal and ethyl hex-2-enoate is reported. These sulfonic acids are putative precursors to the important wine aroma thiols, 3-mercaptohexan-1-ol, 3-mercaptohexyl acetate and 4-mercapto-4-methylpentan-2-one.
Visible-Light-Promoted Intramolecular α-Allylation of Aldehydes in the Absence of Sacrificial Hydrogen Acceptors
Liu, Feng,Liu, Jia-Li,tu, Jia-Lin
supporting information, p. 7369 - 7372 (2020/10/05)
We report herein an unprecedented protocol for radical cyclization of aldehydes with pendant alkenes via synergistic photoredox, cobaloxime, and amine catalysis. The transformation was achieved in the absence of external oxidants, providing a variety of 5-, 6-, and 7-membered ring products with alkene transposition in satisfactory yields. The reaction exhibits wide functional group compatibility and occurs under mild conditions with extrusion of H2.
Oxidative esterification of aliphatic aldehydes and alcohols with ethanol over gold nanoparticle catalysts in batch and continuous flow reactors
Taketoshi,Ishida,Murayama, Toru,Honma, Tetsuo,Haruta, Masatake
, (2019/08/26)
Selective esterification of aliphatic aldehydes and alcohols with ethanol in the absence of a base is a more difficult reaction than that with methanol. Gold nanoparticles on ZnO were found to catalyze the oxidative esterification of octanal to ethyl octanoate with high selectivity. In addition, it was found that Au/ZnO was the most effective catalyst for yielding the desired ethyl ester without a base by direct esterification of 1-octanol with ethanol. As far as we know, this is the first report on oxidative esterification to give aliphatic ethyl esters from less reactive aliphatic alcohols and aldehydes without a base. The optimal size of gold NPs ranged from 2 to 6 nm and the presence of Au(0) was indispensable for this reaction. Au/ZnO exhibited the highest catalytic activity in both batch and flow reactors. The conversion was maintained for more than 20 h with 95% selectivity to the desired ethyl ester in the flow system.