On Triazoles. Part 39. Synthesis and Structure of Some 1,2,4-Triazolo[1,5-a]pyrimidin-5-one Oximes. -Attempts for the direct conversion of compounds (I) to oximes such as (III) with hydroxylamine fail. The isomeric structure of the oximes is proven. -(REITER,
On triazoles. XXXIX. Synthesis and structure of some 1,2,4-triazolo[1,5-a]pyrimidin-5-one oximes
✍ Scribed by József Reiter Jr.; József Reiter
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1997
- Tongue
- English
- Weight
- 655 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Some 1,2,4‐triazolo[1,5‐a]pyrimidin‐5‐one derivatives 1 and their alicyclic condensed ring analogues 2‐3 were converted through the corresponding “imino chlorides” 4‐6 to the oximes 7‐9. The “E” isomeric structure of the products obtained was proven with the use of cmr using the spectral data of the corresponding “benzyloximino” derivatives 10‐12 prepared as model compounds.
📜 SIMILAR VOLUMES
## Abstract **Dedicated to Dr. János Császár on the occasion of his 70^th^ birthday** Ring transformation of 2‐cyanoimido‐3‐methyl‐1,3‐oxazolidine (**10**) yielded 5‐amino‐3‐[__N__‐(2‐hydrox‐yethyl)‐__N__‐methyl]amino‐1__H__‐1,2,4‐triazole (**6**) that was ring closed with different β‐keto esters
## Abstract **Dedicated to Professor András Messmer on the occasion of his 80^th^ birthday** The reaction of differently substituted 5‐amino‐1,2,4‐triazoles (**5**) with isothiourea derivatives (**3**) to yield isomeric 5,7‐diamino‐1,2,4‐triazolo[1,5‐__a__][1,3,5]triazines (**6** and **7**), previ