New Strategy for the Synthesis of Phosphonyl Pyrazoles |
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| Authors: | Hu Chen Ding-Quan Qian Guo-Xiang Xu Yu-Xiu Liu Xiao-Dong Chen Xiao-Dong Shi |
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| Affiliation: | National Key Laboratory of Elemento-organic Chemistry, Institute of Elemento-organic Chemistry, Nankai University , Tianjin, 300071, P.R. China |
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| Abstract: | Phosphonyl hydrazones react with DMF/POC13 to afford 3-phosphonyl pyrazoles. Phosphonyl methylene hydrazones react with DMF/POC13 to provide 4-phosphonyl pyrazoles. 5-Phosphonyl pyrazoles are obtained from the reaction of phosphonyl chlorovinylaldehydes with phenylhydrazine. |
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