Journal
TETRAHEDRON
Volume 67, Issue 29, Pages 5244-5253Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2011.05.036
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Funding
- State of Pakistan
- DAAD
- State of Mecklenburg-Vorpommern
- Friedrich-Irmgard-Harms-Stiftung
- Ministry of Science of the Republic of Serbia [142007]
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Suzuki-Miyaura reactions of N-protected tribromopyrazoles were studied. The reactions proceed with excellent site-selectivity. The first attack occurs at position 5, while the second and third attack occur at positions 3 and 4, respectively. A variety of 3,4,5-triaryl-pyrazoles, 3,5-diaryl-4-bromopyrazoles, and 5-aryl-3,4-dibromopyrazoles were efficiently prepared. The products are not readily available by other methods. (C) 2011 Elsevier Ltd. All rights reserved.
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