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Issue 12, 2014
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Highly efficient organocatalytic synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans under mechanochemical ball milling

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Abstract

An improved one-pot three-component and environmentally benign approach for the synthesis of a wide range of densely functionalized 2-amino-3-cyano-4H-pyran annulated derivatives has been described by the reaction of aryl aldehydes, malononitrile and diverse electron-rich phenolic or enolizable carbonyl compounds under mechanochemical ball milling conditions in the presence of potassium phthalimide (POPI), as a mild basic organocatalyst, at ambient temperature. In comparison to the conventional methods, the remarkable advantages of this green protocol are high to quantitative yields, avoiding the use of any hazardous transition metal-free catalyst or solvent, shorter reaction time at ambient temperature, low cost, and straightforward work-up procedure.

Graphical abstract: Highly efficient organocatalytic synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans under mechanochemical ball milling

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Article information


Submitted
07 Mar 2014
Accepted
07 Jul 2014
First published
07 Jul 2014

Green Chem., 2014,16, 4914-4921
Article type
Paper
Author version available

Highly efficient organocatalytic synthesis of diverse and densely functionalized 2-amino-3-cyano-4H-pyrans under mechanochemical ball milling

M. G. Dekamin and M. Eslami, Green Chem., 2014, 16, 4914
DOI: 10.1039/C4GC00411F

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