T. Delaunay, D. Conreaux, E. Bossharth
May 1, 2010
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Journal
Synthesis
Abstract
3-Alkynyl-4-methoxypyridin-2(1 H)-onesundergo cyclization via divergent pathways when heated in aceticacid or triethyl-amine as reagent-solvent undermicrowave irradiation to furnish selectively furo[2,3- B]pyridin-4-ones or their regioisomericfuro[3,2- C]pyridin-4-ones,respectively. The same strategy applies to the synthesis of furoquinolinones.