期刊
NEW JOURNAL OF CHEMISTRY
卷 37, 期 10, 页码 3137-3144出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj00425b
关键词
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资金
- National Natural Science Foundation of China [20862008]
- Natural Science Foundation of Jiangxi Province [2010GZH0062]
The phosphine-free heterogeneous coupling of acyl chlorides with terminal alkynes was achieved in triethylamine at 50 degrees C in the presence of a 0.2 mol% 3-(2-aminoethylamino)propyl-functionalized MCM-41-immobilized palladium complex [MCM-41-2N-Pd(OAc)(2)], yielding a variety of ynones in good to excellent yields. This novel heterogeneous palladium catalyst can be conveniently prepared from commercially available and cheap reagents and recycled by a simple filtration of the reaction solution, and used for at least 10 consecutive trials without any decrease in activity. Our system not only avoids the use of phosphine ligands, but also solves the basic problem of palladium catalyst recovery and reuse.
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