Acidity constants of benzimidazolium ketone and pyridinium aldehyde hydrates
โ Scribed by Terence C. Owen
- Book ID
- 112129638
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1990
- Tongue
- English
- Weight
- 258 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-152X
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Pyridinium ketones have been found to exist as hydrates and hemiacetals in considerable amount in aqueous and alcoholic solutions, respectively. The relative position of the pyridinium positive charge has a large effect on the equilibrium constants. The polar substituent constants, r \* , of the pyr
The Lewis acid mediated cyclisation of various methylenecyclopropyl ketones, ketals and aldehydes has been investigated as a new route to six-and seven-membered rings. Cyclisation of aldehyde 6, ketal 9 and ketone 11 with TiCI 4 gave cyclohexene products, and cyclisation of ketal 10 gave a dichloroc