Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/59040| Title: | Lewis acid promoted synthesis of methylene-bridged α-and γ-bis-benzopyrones |
| Authors: | Kumar, Sandeep Prasad, Ashok K Mehta, Shilpika Bali |
| Keywords: | O-Methoxyacetyl derivatives of hydroxyl-chromanones;coumarins and chromones;Lewis acid;methylenebridged bis-benzopyrones;Fries rearrangement |
| Issue Date: | Jan-2022 |
| Publisher: | NIScPR-CSIR, India |
| Abstract: | The Lewis acid promoted Fries rearrangement of O-methoxyacetyl derivatives of hydroxy-chromanones, coumarins and chromones under solvent-free condition gives isomeric methylene-bridged bischromanones, biscoumarins and bischromones, respectively, in good yields. The benzopyrone precursors undergo intermolecular rearrangement wherein two benzopyrone moieties are joined through their benzene rings via an un-substituted methylene bridge. |
| Page(s): | 43-50 |
| ISSN: | 2583-1321 (Online); 0019-5103 (Print) |
| Appears in Collections: | IJC Vol.61(01) [January 2022] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Indian J Chem, 61, 43-50 (Jan,2022).pdf | 2.88 MB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.