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Phosphine and Copper-free Sonogashira coupling reaction catalyzed by lignin supported palladium nanoparticles
被引:15
|作者:
Marulasiddeshwara, M. B.
[1
]
Kumar, Raghavendra P.
[1
]
机构:
[1] Tumkur Univ, Univ Coll Sci, Dept Chem, Tumkur 572103, Karnataka, India
关键词:
Palladium;
nanoparticles;
sonogashira reaction;
lignin;
TERMINAL ALKYNES;
IMMOBILIZED PALLADIUM;
HETEROGENEOUS CATALYST;
EFFICIENT CATALYSTS;
AEROBIC CONDITIONS;
ARYL HALIDES;
SUZUKI;
LIGAND;
HECK;
COMPLEXES;
D O I:
10.1016/j.matpr.2018.06.466
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Lignin supported palladium nanoparticles (lignin@Pd-NPs) with an average size of 1-5 nm synthesized by green procedure was successfully explored in phosphine and copper-free Sonogashira C-C coupling reaction of various aryl halides with phenyl acetylene under aerobic conditions. It was found that the catalyst exhibited a high activity resulting desired products in 90-95 % yields. The catalyst was heterogeneous and was recovered by filtration and then recycled up to 3 consecutive reactions of the iodobenzene and phenyl acetylene under similar conditions resulting 93 to 88 % yields of diphenylacetylene. (C) 2018 Elsevier Ltd. All rights reserved.
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页码:20811 / 20818
页数:8
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