Journal
TETRAHEDRON LETTERS
Volume 49, Issue 2, Pages 397-400Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.11.017
Keywords
pyrazoles; diazepines; polystyrenesulfonic acid (PSSA); aqueous medium
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An expeditious room temperature synthesis of pyrazoles and diazepines by condensation of hydrazines/hydrazides and diamines with various 1,3-diketones is described. This greener protocol was catalyzed by polystyrene supported sulfonic acid (PSSA) and proceeded efficiently in water in the absence of any organic solvent within 1-2 min. (C) 2007 Elsevier Ltd. All rights reserved.
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