Abstract
The reactions of α-pentafluorophenylpyrylium salts with hydroxylamine in ethanol afford isoxazoline derivatives and/or pyridine N-oxides depending on the steric characteristics of the substituent in the second α position. The structure of 2-hydroxy-2-pentafluorophenyl-4-phenyl-2,3,5,6,7,8-hexahydroquinoline 1-oxide, which was synthesized by the reaction of 2-pentafluorophenyl-4-phenyl-5,6,7,8-tetrahydrobenzopyrylium perchlorate with NH2OH, was established by X-ray diffraction.
Similar content being viewed by others
References
A. T. Balaban, A. Dinculescu, G. N. Dorofeenko, G. W. Fischer, A. V. Koblik, V. V. Mezheritskii, W. Schroth, Pyrylium Salts: Syntheses, Reactions, and Physical Properties. in Adv. Heterocycl. Chem., Ed. A. R. Katrizky, Suppl. 2. Academic Press, New York, 1982, 434 p.
V. M. Vlasov, Izv. SO Akad. Nauk SSSR, Ser. Khim., 1971, 96 [Bull. Sib. Branch Russ. Acad. Sci., Div. Chem. Sci., 1971 (Engl. Transl.)].
N. A. Orlova, T. N. Gerasimova, M. A. Kudinova, A. I. Tolmachev, Zh. Org. Khim., 1990, 26, 1313 [J. Org. Chem. USSR, 1990, 26 (Engl. Transl.)].
W. R. Dolbier, Jr., J. Fluor. Chem., 2005, 126, 157.
S. P. Sachchar, A. K. Singh, J. Indian Chem. Soc., 1985, 62, 142.
I. Yu. Kargapolova, N. A. Orlova, T. N. Gerasimova, Khim. Geterotsikl. Soedin., 1991, 1100 [Chem. Heterocycl. Compd., 1991, 27 (Engl. Transl.)].
A. T. Balaban, Tetrahedron, 1968, 24, 5059.
C. Uncuţa, M. T. Căproiu, V. Câmpeanu, A. Petride, M. G. Dănilă, M. Plăveţi, A. T. Balaban, Tetrahedron, 1998, 54, 9747.
C. Uncuţa, A. Tudose, M. T. Căproiu, M. Plăveţi, R. Kakou-Yao, Tetrahedron, 1999, 55, 15011.
T. N. Gerasimova, E. P. Fokin, Usp. Khim., 1980, 49, 1057 [Russ. Chem. Rev., 1980, 49 (Engl. Transl.)].
R. S. Rowland, R. Taylor, J. Phys. Chem., 1996, 100, 7384.
H. Suezawa, T. Yoshida, M. Hirota, H. Takahashi, Y. Umezawa, K. Honda, S. Tsuboyama, M. Nishio, J. Chem. Soc., Perkin Trans. 2, 2001, 2053.
Cambridge Structural Database, University of Cambridge, Cambridge, UK, Version 5.27.
Author information
Authors and Affiliations
Corresponding author
Additional information
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 402–407, February, 2008.
Rights and permissions
About this article
Cite this article
Kargapolova, I.Y., Shmuilovich, K.S., Orlova, N.A. et al. Reactions of α-pentafluorophenylpyrylium salts with hydroxylamine. Russ Chem Bull 57, 412–417 (2008). https://doi.org/10.1007/s11172-008-0064-1
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11172-008-0064-1