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Molecules 2001, 6(9), 721-727; doi:10.3390/60900721

Chemistry of Pyrones, Part 5: New Crown Ether and Podand Derivatives of 3,5-Bis(bromomethyl)-2,6-diphenyl-4H-pyran-4-one

Department of Organic Chemistry, Faculty of Chemistry, Tabriz University, Tabriz 51664, Iran
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Author to whom correspondence should be addressed.
Received: 4 October 2000 / Revised: 3 August 2001 / Accepted: 14 August 2001 / Published: 31 August 2001
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Abstract

New podand and crown ether derivatives of 3,5-disubstituted 4H-pyran-4-one (8-11) were prepared by the nucleophilic substitution reaction of 3,5-bis(bromomethyl)-2,6-diphenyl-4H-pyran-4-one with o-nitrophenol, 8-hydroxyquinoline, 2-hydroxymethyl pyridine and triethyleneglycol, respectively. The yield of 3,5-bis[(2-formylphenoxy) methyl]-2,6-diphenyl-4H-pyran-4-one has been improved by modification of our previous method using NaOH instead of Et3N.
Keywords: Crown ether; Podands; 4H-pyran-4-one; Open-chain crown; Nucleophilic substitution Crown ether; Podands; 4H-pyran-4-one; Open-chain crown; Nucleophilic substitution
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Shahrisa, A.; Banaei, A. Chemistry of Pyrones, Part 5: New Crown Ether and Podand Derivatives of 3,5-Bis(bromomethyl)-2,6-diphenyl-4H-pyran-4-one. Molecules 2001, 6, 721-727.

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