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Synlett 2005(7): 1155-1157
DOI: 10.1055/s-2005-865200
DOI: 10.1055/s-2005-865200
LETTER
© Georg Thieme Verlag Stuttgart · New York
A Novel Method for the One-Pot Three-Component Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones
Further Information
Received
8 December 2004
Publication Date:
14 April 2005 (online)
Publication History
Publication Date:
14 April 2005 (online)
Abstract
One-pot three-component condensation of isatoic anhydride with primary amines or ammonium carbonate and aromatic aldehydes in refluxing ethanol in the presence of catalytic amounts of silica sulfuric acid afforded the corresponding 2,3-dihydroquinazolin-4(1H)-ones in high yields. The catalyst is reusable and can be applied several times without any decrease in product yield.
Key words
silica sulfuric acid - heterocycles - 2,3-dihydroquinazolin-4(1H)-ones - catalysis - isatoic anhydride
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