## Abstract Kondensation von 2.3‐ bzw. 3.4‐Diamino‐pyridin mit Chloracetonitril in Polyphosphorsäure ergibt 2‐Chlormethyl‐imidazo[4.5‐__b__]‐ (**1a**) bzw.‐[4.5‐__c__]pyridin (**5**). Durch Umsetzung mit sekundären Aminen werden die entsprechenden Amino‐Derivate **2** bzw. **6** erhalten. Diese wer
✦ LIBER ✦
Quaternization of 1H-imidazo[4,5-b]pyridine and 4-methyl-4H-imidazo[4,5-b]pyridine
✍ Scribed by Yu. M. Yutilov; A. G. Ignatenko
- Publisher
- Springer US
- Year
- 1994
- Tongue
- English
- Weight
- 164 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0009-3122
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## Abstract 4‐Amino‐1,2‐dimethylimidazole‐5‐carbaldehyde (1) and 5‐amino‐1‐methylimidazole‐4‐carbaldehydes 3 were prepared by reduction of the corresponding aminoimidazolecarbonitriles 2 and 4. Condensation of 1 and 3 with carbonitriles, ketones and polyfunctional carbonyl compounds bearing the‐CH~