The synthesis and reactions of sterically constrained pyrylium and pyridinium salts
β Scribed by Katritzky, Alan R.; Thind, Sukhpal S.
- Book ID
- 121321516
- Publisher
- Royal Society of Chemistry
- Year
- 1980
- Weight
- 755 KB
- Category
- Article
- ISSN
- 1472-7781
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π SIMILAR VOLUMES
## Abstract Pyrylium salts 3 react with (benzyloxy)amines 2 generated by hydrazinolysis from their __N__β(benzyloxy)phthalimides to afford in moderate (35β65%) yields the corresponding title salts 4. The ^13^Cβ and ^1^HβNMR spectra of the latter compounds are reported.
Diphenyl-4-(5-R-2-furyl)pyrylium and 2,4-diphenyl-6-(5-bromo-2-furyl)pyrylium perchlorates and the corresponding pyridines and l-methylpyridinium perchlorates were synthesized. On the basis of the UV and PMR spectra it was concluded that there is significant electronic interaction of the furylium s