Begum, Ayisha F. ; Balasubramanian, Kalpattu K. ; Shanmugasundaram, Bhagavathy (2021) Acid activated montmorillonite K-10 mediated intramolecular acylation: Simple and convenient synthesis of 4-chromanones Tetrahedron Letters, 82 . p. 153372. ISSN 0040-4039
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Official URL: http://doi.org/10.1016/j.tetlet.2021.153372
Related URL: http://dx.doi.org/10.1016/j.tetlet.2021.153372
Abstract
3-Aryloxyproionic acids undergo intramolecular cyclization in the presence of AA.Mont.K-10 in toluene under reflux for 30–45 min in good to excellent yields. Phenyl ring bearing various substituents at the ortho, meta, para positions undergo this cyclization reaction. This method involves simple work up and amenable for large scale preparations. The heterogeneous acid treated catalyst can be regenerated and used for up to three cycles with minimum loss of activity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Montmorillonite K-10; Aryloxypropionic acid; Friedal-Crafts acylation; Intramolecular cyclisation; Clay catalyst |
| ID Code: | 128972 |
| Deposited On: | 07 Nov 2022 07:14 |
| Last Modified: | 07 Nov 2022 07:14 |
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