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

Authors
Bandyopadhyay, C Sur, KR Patra, R Sen, A
Citation
C. Bandyopadhyay et al., Synthesis of coumarin derivatives from 4-oxo-4H-1-benzopyran-3-carboxaldehyde via 3-(arylaminomethylene)chroman-2,4-dione, TETRAHEDRON, 56(22), 2000, pp. 3583-3587
Citations number
24
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
56
Issue
22
Year of publication
2000
Pages
3583 - 3587
Database
ISI
SICI code
0040-4020(20000526)56:22<3583:SOCDF4>2.0.ZU;2-F
Abstract
K-10 Montmorillonite mediated condensation of aldehyde 1 with arylamine 2 a ffords 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 heat ing with POCl3. (C) 2000 Elsevier Science Ltd. All rights reserved.