Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 10, Issue 30, Pages 9787-9797Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.2c01239
Keywords
alkenes; alkynes; lead-free; palladium free; vitamins
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A lead- and palladium-free alternative to the Lindlar catalyst has been developed for semi-hydrogenation of alkynes. The catalyst, silica-supported nickel nanoparticles modified by nitrogen-doped carbon, shows high selectivity even in the presence of easily reducible groups, making it attractive for various synthetic applications.
A lead- and palladium-free alternative to the Lindlar catalyst has been developed for industrially relevant alkyne semi-hydrogenation using silica-supported nickel nanopartides modified by nitrogen-doped carbon. The optimal nickel catalyst acts under mild conditions (5 bar H-2, 100 degrees C, and 4 h) for the selective semi-hydrogenation of a range of allcynes, including vitamin precursors that are important food supplements. Notably, this novel catalyst is selective for alkynes in the presence of easily reducible groups such as carbonyl and nitrile, which also makes it attractive for other synthetic applications.
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