Yang Y, Hu ZL, Li RH, Chen YH, Zhan ZP. Pyrazole synthesis via a cascade Sonogashira coupling/cyclization of N-propargyl sulfonylhydrazones.
Org Biomol Chem 2018;
16:197-201. [DOI:
10.1039/c7ob02576a]
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Abstract
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.
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