Journal
TETRAHEDRON
Volume 70, Issue 24, Pages 3782-3787Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2014.04.032
Keywords
One-pot synthesis; Pyrazoles; o-Alkynylaldehydes; Ketones; Hydrazine
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Funding
- National Natural Science Foundation of China [91017005, 81172935, 81373255]
- Key Project of Ministry of Education [313040]
- Hubei Province's Outstanding Medical Academic Leader Program
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An efficient one-pot synthesis of fused pyrazoles has been developed. The procedure involved three components reaction of o-alkynylaldehydes 1a-s with ketones 2a-m and hydrazine under mild, metal-free reaction conditions. The desired products were obtained in one-step up to 85% yield. The molecular structure was confirmed by the X-ray crystallographic analysis. (C) 2014 Elsevier Ltd. All rights reserved.
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