標題: Silica-Supported Cu Nanoparticle Catalysts for Alkyne Semihydrogenation: Effect of Ligands on Rates and Selectivity
作者: Fedorov, Alexey
Liu, Hsueh-Ju
Lo, Hung-Kun
Coperet, Christophe
應用化學系
Department of Applied Chemistry
公開日期: 21-十二月-2016
摘要: Narrowly dispersed, silica-supported Cu nano particles (ca. 2 nm) prepared via surface organometallic chemistry from a mesityl complex [Cu(5)Mes(5)] are highly active for the hydrogenation of a broad range of alkynes. High-throughput experimentation allows for identifying the optimal ligand and reaction conditions to turn these supported Cu nanoparticles into highly chemo- and stereoselective catalysts for the preparation of Z-olefins (overall, 23 examples). For instance, PCy3-modified Cu nanoparticles semihydrogenate 1-phenyl-l-propyne to cis-beta-methylstyrene (20 bar H-2, 40 degrees C) with turnover number and turnover frequency of ca. 540 and 1.9 min(-1), respectively, and with 94% selectivity at full conversion.
URI: http://dx.doi.org/10.1021/jacs.6b10817
http://hdl.handle.net/11536/132964
ISSN: 0002-7863
DOI: 10.1021/jacs.6b10817
期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume: 138
Issue: 50
起始頁: 16502
結束頁: 16507
顯示於類別:期刊論文