The synthesis of phosphonyl pyrazoles

Article abstract of DOI:10.1080/10426509908546188

Phosphonyl hydrazones react with DMF/POCl₃ to afford 3-phos-phonyl pyrazoles. Phosphonyl methylene hydrazones react with DMF/POCl₃ to provide 4-phosphonyl pyrazoles. 5-phosphonyl pyrazoles are obtained from the reaction of phosphonyl chlorovinylaldchydes with phenylhydrazine.

Full text of DOI:10.1080/10426509908546188

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Phosphorus, Sulfur, and
Silicon and the Related
Elements
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The Synthesis of
Phosphonyl Pyrazoles
Hu Chen , Ding-Quan Qian , Guo-Xiang
Xu , Yu-Xiu Liu , Xiao-Dong Chen , Xiao-
Dong Shi , Ru-Zhen Cao & Lun-Zu Liu
a National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
b National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
c National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
d National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
e National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China

f National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
g National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
h National Key Laboratory of Elemento-
Organic Chemistry, Institute of Elemento-
Organic Chemistry, Nankai University ,
Tianjin 300071, P.R.China
Published online: 17 Mar 2008.
To cite this article: Hu Chen , Ding-Quan Qian , Guo-Xiang Xu , Yu-Xiu Liu ,
Xiao-Dong Chen , Xiao-Dong Shi , Ru-Zhen Cao & Lun-Zu Liu (1999) The
Synthesis of Phosphonyl Pyrazoles, Phosphorus, Sulfur, and Silicon and the
Related Elements, 144:1, 85-88, DOI: 10.1080/10426509908546188
To link to this article: http://dx.doi.org/10.1080/10426509908546188
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