Facile synthesis of oxabicyclic alkenes by ultrasonication-promoted diels-alder cycloaddition of furano dienes.
Kun Wei, Hai-Tao Gao, Wei-Dong Z Li
Index: J. Org. Chem. 69(17) , 5763-5, (2004)
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Abstract
Ultrasonic irradiation effectively promotes the Diels-Alder reaction of substituted furans with reactive dienophiles (i.e., dimethyl acetylenedicarboxylate (DMAD) and dimethyl maleate). Regiospecific furano Diels-Alder cycloaddition of 2-vinylic furans with DMAD furnished functionalized oxabicyclic alkenes in good yield under ultrasonication condition.Copyright 2004 American Chemical Society
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