Reactions with 2(1<i>H</i>)-Quinolinone and Coumarine Derivatives: New Routes to Polysubstituted 2(1<i>H</i>)-Quinolinone and Coumarine Derivatives
作者:Fathy Mohamed Abdel Aziz El-Taweel、Salah Zaki Ahmed Sowellim、Abdel Ghani Ali Elagamey
DOI:10.1246/bcsj.68.905
日期:1995.3
Whereas 2H-pyrano[3,2-c]quinoline-2,5(6H)-dione (2a) or 3-acetyl-1-methyl-2(1H)-quinolinone (3a) reacted with the benzylidenenitriles 1a—f or a mixture of either malononitrile or ethyl cyanoacetate and aromatic aldehydes in ethanol/piperidine to give 4H-pyran derivatives 8, the reaction of 2b,c or 3b,c with the same reagents afforded 4,6-dihydro-5H-pyrano[3,2-c]quinolin-5-ones 11. Compounds 11 were
而2H-吡喃并[3,2-c]喹啉-2,5(6H)-二酮(2a)或3-乙酰基-1-甲基-2(1H)-喹啉酮(3a)与亚苄基腈1a-f或丙二腈或氰基乙酸乙酯和芳香醛在乙醇/哌啶中的混合物得到 4H-吡喃衍生物 8,2b,c 或 3b,c 与相同的试剂反应得到 4,6-二氢-5H-吡喃 [3, 2-c]quinolin-5-ones 11. 化合物 11 也由 1a-f 和 3d,e,f 制备。吡喃并[3,2-c]香豆素2d与1a反应生成6H,11H-[2]苯并吡喃[4,3-c][1]苯并吡喃-6,11-二酮(15)。用氰化钾水溶液或羟胺处理 17 分别得到 2(1H)-喹啉酮衍生物 19 和 20。