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http://nopr.niscpr.res.in/handle/123456789/16580| Title: | Methyl 3-arylamino-2-benzoylaminopropenoates in the synthesis of 4-arylaminomethylene-2-phenyl-2-oxazolin-5-ones: Unexpected formation of bis-oxazolones |
| Authors: | Singh, Manoj K Singh, Ram S Singh, Radhey M |
| Issue Date: | Aug-1999 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The reaction of methyl 3-arylamino-2-benzoylaminopropenoates 2 with phosphorus oxychloride in pyridine at 70°C for 30 min leads to the unexpected formation of N-aryl-N-bis-(5-oxo-2-phenyl-4, 5- dihydro-oxazol-4-ylmethylene) amines 4. In contrast, 4-arylaminomethylene-2-phenyl-2-oxazolin-5-ones 3 are obtained in only 2 min from compounds 2 under similar reaction conditions, which subsequently give compounds 4 on treatment with POCI3 in pyridine. A tentative mechanism to account the following conversion is suggested. |
| Page(s): | 920-924 |
| Appears in Collections: | IJC-B Vol.38B(08) [August 1999] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCB 38B(8) 920-924.pdf | 819.09 kB | Adobe PDF | View/Open |
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