期刊
ACS CATALYSIS
卷 6, 期 3, 页码 2121-2125出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.5b02953
关键词
alkyne hydrogenation; alkene isomerization; (E)-alkene; ordered alloy; intermetallic compound; Pd3Pb; RhSb
资金
- Grants-in-Aid for Scientific Research [16H04565] Funding Source: KAKEN
Intermetallic Pd3Pb acts as a highly selective alkyne semihydrogenation catalyst that is greatly superior to the conventional Lindlar catalyst. Density functional theory (DFT) calculations demonstrate an ideal adsorption property of Pd3Pb, where the surface holds alkynes while releasing alkenes. A tandem catalytic system that is comprised of Pd3Pb/SiO2 for alkyne semihydrogenation and RhSb/SiO2 for alkene isomerization allows one-pot (E)-alkene synthesis from a functionalized alkyne, which is the first success using heterogeneous catalysts. A variety of functionalized alkynes with aldehyde, ketone, carboxylic acid, and ester moieties are hydrogenated into the corresponding (E)-alkene in good to excellent yields under 1 atm H-2 at room temperature.
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