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One-pot synthesis of 5-sulfonamidopyrazole from terminal alkynes, sulfonyl azides and hydrozones |
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| Authors: | Yao LiDeng Hong Yuanxun ZhuPing Lu Yanguang Wang |
| Institution: | Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China |
| Abstract: | 5-Sulfonamidopyrazoles were efficiently synthesized from terminal alkynes, sulfonyl azides and hydrozones. The sequential reaction involves a copper-catalyzed three-component reaction, a Lewis acid-catalyzed electrocyclic reaction and a dehydrogenation. |
| Keywords: | Multicomponent reactions Alkynes Sulfonyl azides Hydrozones Pyrazoles Electrocyclic reactions |
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