Synthesis of Coumarin Derivatives from 4-Oxo-4H-1-benzopyran-3-carboxaldehyde via 3-(Arylaminomethylene)chroman-2,4-dione
作者:Chandrakanta Bandyopadhyay、Kumar Ranabir Sur、Ranjan Patra、Arunabha Sen
DOI:10.1016/s0040-4020(00)00269-6
日期:2000.5
K-10 Montmorillonite mediated condensation of aldehyde 1 with arylamine 2 affords chroman-2,4-dione 5 which gives tricoumarol 8 by acid hydrolysis, 4-arylamino-3-formylcoumarin 11 and 1-benzopyrano[4,3-b]quinoline 12 on heating with POCl3.
K-10蒙脱土醛的缩合介导1与芳基胺2,得到苯并二氢吡喃-2,4-二酮5赋予tricoumarol 8通过酸水解,4-芳基氨基-3- formylcoumarin 11和1-苯并吡喃并[4,3- b ]喹啉12用POCl 3加热。