A novel synthetic route to 1,2-dimethyl-5-phenyl-1H-imidazo[4,5-b]pyridin-7-ol
✍ Scribed by Randall Lis; Joseph A. Traina; John C. Huffman
- Book ID
- 112129556
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1990
- Tongue
- English
- Weight
- 264 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The reaction of benzil 1‐ureidoethylidene hydrazones 8 with a mixture of triphenylphosphine, carbon tetrachloride, and triethylamine provides a general route to 7__H__‐imidazo[1,2‐__b__][1,2,4]triazoles 18 __via__ the thermal reaction of the expected keto azine carbodiimide intermediate
## Abstract The condensation of 4‐hydroxy‐6‐methyl‐2__H__‐pyran‐2‐one and substituted 2‐hydroxybenzaldehydes with ammonium acetate gave the title heterocycles. Synthesis of 1,5‐dihydro‐2‐methyl‐4__H__‐[1]naphtho‐[1′,2′:5,6]pyrano[4,3‐__b__]‐pyridine‐4,5‐dione is also described. A reaction mechanism