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Conversions of 7-aryl-7H-pyrazolo[3,4-d]-[1,2,3]triazin-4-ols by the action of phosphorus pentoxide, pentasulfide, and oxychloride

✍ Scribed by B. M. Khutova, S. V. Klyuchko, A. O. Gurenko, A. N. Vasilenko, A. G. Balya, E. B. Rusanov, V. S. Brovarets


Book ID
118064400
Publisher
Springer US
Year
2012
Tongue
English
Weight
536 KB
Volume
48
Category
Article
ISSN
0009-3122

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Phosphorus Pentoxide in Organic Synthesi
✍ Nielsen, SΓΈren V. ;Pedersen, Erik B. πŸ“‚ Article πŸ“… 1986 πŸ› John Wiley and Sons 🌐 English βš– 404 KB

4-Arylamino-5,6,7.8-tetrahydro-l H-pyrazolo[3,4-b]quinolines 2 have been synthesized from ethyl 5-amino-1 H-pyrazole-4-carboxylate (1) and cyclohexanone by heating in a reagent mixture of P4010, N,N-dimethylcyclohexylamine, and an appropriate arylamine hydrochloride (8 -52% yield). Reaction of 2 wit