期刊
TETRAHEDRON
卷 62, 期 23, 页码 5454-5463出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2006.03.051
关键词
hetero-Diels-Alder reaction; pyridines; microwave irradiation
The hetero-Diels-Alder reaction between 1-aza-3-siloxy-1,3-butadienes and electron deficient acetylenes is described. The reactivity of a range of alpha,beta-unsaturated oximes and hydrazones is assessed in the synthesis of tri- and tetra-substituted pyridines bearing an oxygen functionality at C-3. Microwave irradiation has been employed to decrease the extended reaction times and increase the poor yields often associated with this reaction. (c) 2006 Elsevier Ltd. All rights reserved.
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