New Oxidation-reduction Transformation of Derivatives of 1,10b-Dihydro-1H-pyrazolo[1,5-c]-1,3-benzoxazine and 7,12-Dihydro-6H-[1]benzopyrano[4,3-d]-1,2,4-triazolo[1,5-a]pyrimidine
✍ Scribed by S.M. Desenko; V.N. Chernenko; V.D. Orlov; V.I. Musatov
- Book ID
- 110324648
- Publisher
- Springer US
- Year
- 2001
- Tongue
- English
- Weight
- 100 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0009-3122
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📜 SIMILAR VOLUMES
## Abstract The aza‐Wittig reactions of benzaldehyde‐, acetophenone‐ and benzophenone 1‐[(triphenylphosphor‐anylidene)amino]ethylidenehydrazones (**1**) with 2,3‐furandiones **6** provide a new route to 4__H__,8__H__‐1,2,4‐triazolo[1,5‐__c__][1,3]oxazepin‐4‐ones **14** or 5,6‐dihydro‐7__H__,12__H__
The reaction of 3-mercapto-4-aryIideneamino-l,2,4triazoles 2b-d, 3a-d with ethyl bromoacetate and/or phenacyl bromide in hot DMF and triethylamine affords the stereochemically pure 7-acyl-6-aryl-6,7dihydro-5H-lt2, 4-triazolo[3,4-b][l, 3,4]thiadiazines