Efficient Domino Strategy for the Synthesis of Polyfunctionalized Benzofuran-4(5<i>H</i>)-ones and Cinnoline-4-carboxamides
作者:Guan-Hua Ma、Xing-Jun Tu、Yi Ning、Bo Jiang、Shu-Jiang Tu
DOI:10.1021/co5000097
日期:2014.6.9
synthesis of multifunctionalized 6,7-dihydrobenzofuran-4(5H)-ones undermicrowaveirradiation in ethyl alcohol within short periods has been established. The synthesized benzofuran-4(5H)-ones have been readily converted into polyfunctionalized cinnoline-4-carboxamides by treating with hydrazine hydratein in the same solvent through a regioselective ring-opening of the furan. Tedious workup procedures can be