ChemInform Abstract: Synthesis of Dihydrochromeno[4,3-b]pyrazolo[4,3-e]pyridin-6(7H)-ones Involving One-Pot Three-Component Tandem Knoevenagel-Michael Reaction Catalyzed by n-Tetrabutylammonium Tribromide (TBATB).

Authors :: Ghosh, Arindam
Khan, Abu T.
Source :: ChemInform. Sep2014, Vol. 45 Issue 35, pno-no. 1p.
Publication Year :: 2014
Abstract: A simple protocol for the three-component reaction of 4-hydroxycoumarin, pyrazole (II) and aldehydes to give the title compounds via a tandem Knoevenagel-Michael reaction followed by cyclization. [ABSTRACT FROM AUTHOR]

Subjects :: *PYRAZOLES
*HETEROCYCLIC compounds synthesis
*PYRIDINE synthesis
*MICHAEL reaction
*BROMIDES
*AMMONIUM compounds
*RING formation (Chemistry)

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