Studies with 1-functionally substituted alkylbenzotriazoles: An efficient route for the synthesis of 1-azolylbenzotriazoles, benzotriazolylazines and benzotriazolylazoloazines
โ Scribed by Fatima Al-Omran
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2000
- Tongue
- English
- Weight
- 329 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0022-152X
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โฆ Synopsis
Abstract
A new approach to the synthesis of pyrazole, isoxazole, pyridine and pyrazolo[1,5โฮฑ]pyrimidine deriva tives is reported. The structure of the newly synthesized compounds was elucidated by elemental analyses, ir and ^1^H nmr spectra, and in some cases by ^13^C nmr investigation.
๐ SIMILAR VOLUMES
2,6-Dibromopyridine N-oxide and 4-nitro-2,6-dibromopyridine N-oxide were treated with tributyl(pyridin-2-yl)stannane under the conditions of the Stille coupling reaction. Derivatives of 2,2ะ-bipyridine 1-oxides as well as 2,2ะ:6ะ,2ะะ-terpyridine 1ะ-oxides were synthesised. Oxidation of 2,2ะ:6ะ,2ะะ-t
The 1-substituted ethylidenemalononitriles la-c condensed with triethyl orthoformate in refluxing acetic anhydride to yield the dienes 2a-c. On the other hand, a mixture o f N, N-dimethylformamide and triethyl orthoformate condensed with la-d to yield the N, N-dimethylaminopentadienonitriles 2d-g. T