期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 16, 期 2, 页码 197-201出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ob02576a
关键词
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资金
- National Natural Science Foundation of China [21772166]
- NFFTBS [J1310024]
An efficient approach for the preparation of pyrazoles via a Pd(II)/Cu(I)-catalyzed Sonogashira coupling/cyclization of N-propargyl sulfonylhydrazones has been established. In this study, we firstly report the strategic use of a Sonogashira reaction to construct pyrazole rings in a one step operation. With a broad range of functional group tolerance, bioactive 3-CF3 pyrazoles can also be synthesized easily through this domino coupling/cyclization sequence.
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