Practical One-Pot Syntheses of Regioisomeric Furan-Fused Pyridinones (and Quinolinones) from Common Precursors
作者:Nuno Monteiro、Geneviève Balme、Thierry Delaunay、David Conreaux、Emmanuel Bossharth、Philippe Desbordes
DOI:10.1055/s-0029-1218692
日期:2010.5
-ones undergo cyclization via divergent pathways when heated in acetic acid or triethylamine as reagent-solvent under microwave irradiation to furnish selectively furo[2,3-b]pyridin-4-ones or their regioisomeric furo[3,2-c]pyridin-4-ones, respectively. The same strategy applies to the synthesis of furoquinolinones. annulation - furan - alkyne - cross-coupling reaction - microwave irradiation
3-炔基-4-甲氧基吡啶-2(1 H)-酮在乙酸或三乙胺中作为溶剂在微波辐射下加热,经发散途径环化,选择性地提供呋喃[2,3 - b ]吡啶-4-酮或它们的区域异构体呋喃并[3,2 - c ]吡啶-4-酮。相同的策略适用于呋喃喹啉酮的合成。 环化-呋喃-炔-交叉偶联反应-微波辐射