Synthesis of coumarin derivatives from 4-oxo-4H-1-benzopyran-3-carboxaldehyde via 3-(arylaminomethylene)chroman-2,4-dione

被引:47
作者
Bandyopadhyay, C [1 ]
Sur, KR [1 ]
Patra, R [1 ]
Sen, A [1 ]
机构
[1] Ramakrishna Mission Vivekananda Centenary Coll, Dept Chem, Rahara 743186, W Bengal, India
关键词
coumarin derivatives; montmorillonite; heterocycles; benzopyran;
D O I
10.1016/S0040-4020(00)00269-6
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
K-10 Montmorillonite mediated condensation of aldehyde 1 with arylamine 2 affords chroman-2,4-dione 5 which gives tri-coumarol 8 by acid hydrolysis, 4-arylamino-3-formylcoumarin 11 and 1-benzopyrano[4,3-b]quinoline 12 on heating with POCl3. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:3583 / 3587
页数:5
相关论文
共 24 条