PPA-SiO2 as a Heterogeneous Catalyst for
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Hamid Reza Shaterian; Ali Reza Oveisi
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Article
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2009
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John Wiley and Sons
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English
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๐ 1 views
## Abstract Silicaโsupported polyphosphoric acid (PPAโSiO~2~) catalyzed efficiently the reaction of anthranilamide with aryl aldehydes or ketones under solventโfree conditions to afford the corresponding 1,2,3,4โtetrahydroโ4โquinazolinone derivatives. This work consistently has the advantages of ex