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3. An efficient five-component synthesis of thioether containing dihydropyrano[2,3-c]pyrazoles: a green domino strategy

Author

Vediyappan Ramesh, Natarajan Savitha Devi, and Sivakumar Shanmugam

Subjects
010405 organic chemistry, Component (thermodynamics), General Chemistry, 010402 general chemistry, 01 natural sciences, Catalysis, Domino, 0104 chemical sciences, chemistry.chemical_compound, Thioether, chemistry, Atom economy, Materials Chemistry, Organic chemistry
Abstract

An efficient route for the synthesis of novel thioether containing dihydropyrano[2,3-c]pyrazoles has been accomplished via a solvent-free, catalyst-free, one-pot, five component domino strategy. This synthetic approach offers several advantages such as an easy work-up, no need for purification techniques and a short reaction time with good atom economy and high yields of the products (81–86%).

Published
2016
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4. A Facile Four-Component Tandem Protocol for the Synthesis of Novel 2,6-Diaryl-2,3-dihydro-1H-pyridin-4-ones

Author

Subbu Perumal and Natarajan Savitha Devi

Subjects
Four component, Tandem, Stereochemistry, Chemistry, Organic Chemistry, General Medicine, Biochemistry, Medicinal chemistry, chemistry.chemical_compound, Molar ratio, Drug Discovery, Organic chemistry, Ammonium acetate, Sequence (medicine)
Abstract

A one-pot, four-component reaction of 1-(phenylsulfinyl)- or 1-(4-chlorophenylsulfinyl)propan-2-one, aromatic aldehydes and ammonium acetate in a 1:2:1 molar ratio affords a series of new 2,6-diaryl-2,3-dihydro-1H-pyridin-4-ones. This reaction proceeds presumably via a double Mannich reaction–elimination tandem sequence.

Published
2007
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