期刊
TETRAHEDRON LETTERS
卷 49, 期 23, 页码 3814-3818出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2008.03.127
关键词
gallium(III) triflate; 2,3-dihydroquinazolin-4(1H)-ones; quinazolin-4(3H)-ones; one-pot; selective synthesis
A series of 2,3-dihydroquinazolin-4(1H)-ones and quinazolin-4(3H) -ones have been synthesized in good to excellent yields and high selectivity by one-pot reaction using isatoic anhydride, ammonium acetate (or amines), and aldehydes in ethanol or in DMSO under mild conditions, respectively. The reaction was efficiently prompted by 1 mol % Ga(OTf)(3) and the catalyst could be recovered easily after the reactions and reused without evident loss of reactivity. (C) 2008 Published by Elsevier Ltd.
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