Preparation of Deuterized Raney Nickel and Selective Deuteration of the Triple Bond<sup>2</sup>
作者:N. A. Khan
DOI:10.1021/ja01132a019
日期:1952.6
Biosynthesis of (<i>R</i>)-γ-Decanolactone in the Yeast <i>Sporobolomyces odorus</i>
作者:Thomas Haffner、Roland Tressl
DOI:10.1021/jf950570w
日期:1996.1.1
Addition of [9,10-H-2(2)]oleic acid to cultures of the yeast Sporobolomyces odorus led to the formation of labeled (R)-gamma-decanolactone and both enantiomers of (Z)-6-gamma-dodecenolactone and gamma-dodecanolactone. The labeling patterns of these lactones were estimated by a quantitative gas chromatography/mass spectrometry method, suitable for ring-labeled lactones. For the first time, there is strong evidence of oleic acid being a genuine precursor of the important aroma compound (R)-gamma-decanolactone. On the basis of the presented and former results, a new biosynthetic pathway of this compound is proposed. Starting with a strict enantioselective (R)-12-hydroxylation of oleic acid as an initial step, the following beta-oxidation led to the lactone. In addition, biosynthetic aspects of the formation of (Z)-6-gamma-dodecenolactone and gamma-dodecanolactone in S. odorus are discussed.
DETERDING, LEESA J.;GROSS, MICHAEL L., ANAL. CHIM. ACTA, 200,(1987) N 1, 431-445
作者:DETERDING, LEESA J.、GROSS, MICHAEL L.
DOI:——
日期:——
Electrochemical Proton Reduction over Nickel Foam for
<i>Z</i>
‐Stereoselective Semihydrogenation/deuteration of Functionalized Alkynes
作者:Alejandro Valiente、Pablo Martínez‐Pardo、Gurpreet Kaur、Magnus J. Johansson、Belén Martín‐Matute
DOI:10.1002/cssc.202102221
日期:2022.1.10
Foam catalyst: Commercially available nickel foam is an excellent catalyst for the electrochemical semihydrogenation/semideuteration of functionalized alkynes in diluted sulfuric acid under ambient conditions. Here, the applicability of this catalyst for the stereoselective synthesis of Z-alkenes and Z-alkenes-d2 is presented. The nickel foam is recyclable up to 14 times without losing its catalytic