Journal
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
Volume 189, Issue 7-8, Pages 873-888Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10426507.2014.903484
Keywords
Multicomponent reaction; (2-amino-3-cyano-4H-chromen-4-yl)phosphonic acid diethyl esters; nanocrystalline MgO; room temperature
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Funding
- CSIR, New Delhi [02(0110)/12/EMR-II]
- CSIR, New Delhi
- DST under FIST program
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A facile and efficient protocol for one-pot three-component synthesis of structurally diverse (2-amino-3-cyano-4H-chromen-4-yl)phosphonic acid diethyl esters from the reaction of salicylaldehydes, malononitrile (or ethyl cyanoacetate), and triethylphosphite using basic nanocrystalline MgO as catalyst in aqueous ethanolic medium at room temperature has been developed. Nano-MgO has been prepared using a simple sol-gel approach. Clean reaction profile, easy reusability of MgO nano-catalyst, mild reaction condition, good yields, and practical applicability are the major advantages of the present protocol.
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