期刊
TETRAHEDRON LETTERS
卷 48, 期 26, 页码 4505-4508出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2007.04.144
关键词
4-aryl-3,4-dihydrocoumarins; microwave irradiation; yttrium trifluoromethanesulphonate
A new and efficient synthesis of eleven 4-aryl-3,4-dihydrocoumarins, in which six are new compounds, was performed using (CF3SO3)(3)Y as catalyst under microwave irradiation. The target compounds were obtained in good yields (68-80%) and remarkable time (7-20 min) when compared to the literature reports (1-40 h). (c) 2007 Elsevier Ltd. All rights reserved.
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