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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 28, 1998 - Issue 12
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Original Articles

Synthesis of New 4-Benzoyl-5-hydroxy-3-Trifluoromethylpyrazole Derivatives via [1,3] Rearrangements of Benzoyl Group Using tert - Butyllithium

Dong Ju Jeon Korea Research Institute of Chemical Technology, P. O. Box 107, Yusong, Taejon, 305—600, Korea
,
Dong Wook Yu Korea Research Institute of Chemical Technology, P. O. Box 107, Yusong, Taejon, 305—600, Korea
,
Kyeong Yeol Yun Korea Research Institute of Chemical Technology, P. O. Box 107, Yusong, Taejon, 305—600, Korea
&
Eung K. Ryu Korea Research Institute of Chemical Technology, P. O. Box 107, Yusong, Taejon, 305—600, Korea
Pages 2159-2166 | Received 03 Nov 1997, Published online: 02 Sep 2006

REFERENCES

  • For [1, 3] benzoyl rearrangements in pyrazoles: (a) Eto M. “Bioorganic Chemistry of Pesticide - Research and Development (Japan),” Soft Science Inc. Tokyo 1985 519 537
  • Dewald , H. A. , Lobbestael , S. and Poschel , B. P. H. 1981 . J. Med. Chem. , 24 : 982
  • JP-A-63–122672, JP-A-63–122673, JP-A-63–170365, JP-A-2–173, JP-A-2–288866
  • Montes , I. F. and Burger , U. 1996 . Tetrahedron Lett. , 37 : 1007
  • Akhrem , A. A. , Lakhvich , F. A. , Budai , S. I. , Khlebnicova , T. S. and Petrusevich , I. I. 1978 . Synthesis , : 925
  • Hellwinkel , D. , Hofmann , G. and Lammerzahl . 1977 . Tetrahedron Lett. , : 3241
  • Sibi , F. , M. P. and Snieckus , V. 1983 . J. Org. Chem. , 48 : 1935
  • Although the wavenumbers of carbonyl absorption in compounds 6 and 7 are lower than usual carbonyl groups in the IR spectra, these values are in good agreement with those reported for the other 4-benzoylpyrazoles, see reference 1(a)

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