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http://142.54.178.187:9060/xmlui/handle/123456789/19561| Title: | Use of NMR and Mass Spectrometry in Establishing the Structures of Ring Opening products of 3- Methyl- 4,1- Benzoxazepine-2,5- Dione in Acid and Basic Media |
| Authors: | SAMINA ALAM ZAHEER-UD-DIN BABER KHAN, NAEEMA |
| Issue Date: | 3-Dec-2000 |
| Publisher: | Karachi: International Centre for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi |
| Citation: | Alam, S., Baber, Z. U. D., & Khan, N. (2000). Use of NMR and mass spectrometry in establishing the structures of ring opening products of 3-methyl-4, 1-benzoxazepine-2, 5-dione in acid and basic media. JOURNAL OF THE CHEMICAL SOCIETY OF PAKISTAN, 22(4), 299-302. |
| Abstract: | 3-Methyl-4,1-benzoxazepine-2.5-dione (I) when stirred for lr hours in methanolic solution with a few drops of 10 %. NaOH below 60 degreesC gave solid crystalline product (m.p. 100-102 degreesC, 51% yield). H-1 NMR and MS analysis confirmed structure (II) which suggest the cleavage of C-O bond but when (I) was treated with a few drops of 10% HCl under similar temperature yielded compound (III) as a liquid which gave evidence for C-N bond cleavage giving no traces of the former product (II). |
| URI: | http://142.54.178.187:9060/xmlui/handle/123456789/19561 |
| ISSN: | 0253-5106 |
| Appears in Collections: | Issue 04 |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 1722-7719-1-RV.htm | 123 B | HTML | View/Open |
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