Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/16651| Title: | Cyclisation of 3-[cyclopent-2-enyl]-4-hydroxy[1]benzopyran-2-one |
| Authors: | Majumdar, K C Choudhury, P K Biswas, P |
| Issue Date: | Nov-1999 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | 3-[Cyclopent-2-enyl]-4-hydroxy[1]benzopyran-2-one 3 has been prepared by the reaction of 3-chlorocyclopent-2-ene 2 and 4-hydroxy[1]benzopyran-2-one 1. Compound 3 or its acetate 4 on treatment with pyridine hydrotribromide in dichloromethane at 0-5°C for 2 hr gives fused furo chromone 5 in 90 % yield. Compound 5 on refluxing in 50 % sulphuric acid rearranges to the fused furocoumarin 7 in 87 % yield. |
| Page(s): | 1248-1252 |
| Appears in Collections: | IJC-B Vol.38B(11) [November 1999] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 38B(11) 1248-1252.pdf | 986.18 kB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.