Application of Pd Nanoparticles Supported on Mesoporous Hollow Silica Nanospheres for the Efficient and Selective Semihydrogenation of Alkynes

作者：Verho Oscar^*; Zheng Haoquan; Gustafson Karl P J; Nagendiran Anuja; Zou Xiaodong^*; Backvall Jan E^*

来源：ChemCatChem, 2016, 8(4): 773-778.

DOI：10.1002/cctc.201501112

• alkynes
• heterogeneous catalysis
• nanocatalysis
• palladium
• semihydrogenation

Herein, the preparation of a heterogeneous catalyst consisting of 1-2nm sized Pd nanoparticles supported on amino-functionalized mesoporous hollow silica nanospheres and its use for the semihydrogenation of mono- and disubstituted alkynes is reported. By utilizing this Pd nanocatalyst together with the green poisoning agent DMSO, high yields of the desired alkenes could be achieved, while suppressing the degree of over-reduction to alkanes. To our delight, the Pd nanocatalyst displayed remarkable chemoselectivity towards the alkyne moiety, allowing the transformation to be carried out in the presence of other reducible functionalities, such as halogens, carbonyl, and nitro groups.

• 出版日期2016-2-18