PEG1000 as a Low Melting and Ecofriendly Solvent for Air Oxidative and Catalyst Free 2,4-Disubstitute Quinazoline Synthesis

Author(s): Ebrahim Saeedian Moghadam, Shahrzad Ghafary, Mohsen Amini*

Journal Name: Letters in Organic Chemistry

Volume 17 , Issue 9 , 2020

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Abstract:

With regard to the importance of quinazoline as a privileged scaffold, herein we report the synthesis of twenty seven 2,4-disubstitute quinazoline derivatives in a new catalyst free condition. In the current work, poly ethylene glycol (PEG1000) as an inexpensive, very simple commercially available, ecofriendly and low melting point solvent was used. Air bubbling, a green oxidant, for oxidation purpose was also used. This is the first report about using PEG1000 as a solvent simultaneously with air bubbling as oxidant in quinazoline synthesis. All of the compounds 1-27 were synthesized in high yield with very simple work up and purification process without using column chromatography. All the structures were confirmed using 1H NMR, 13C NMR, IR, MS and elemental analysis.

Keywords: Air oxidation, catalyst free, ecofriendly solvent, PEG1000, quinazoline, synthesis.

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Article Details

VOLUME: 17
ISSUE: 9
Year: 2020
Page: [709 - 716]
Pages: 8
DOI: 10.2174/1570178616666190417122005
Price: $65

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