Studies in dipyridyl chemistry. VII. Sulfur trioxide sulfonation of γ,γ′-dipyridyl
Reaction of γ,γ′-dipyridyl with sulfur trioxide at room temperature gives γ,γ′-dipyridyld'isulfotrioxide, which latter on heating at 200° gives γ,γ′-dipyridyl-sulfonic acid. Salts of γ,γ′-dipyridyl-3-sulfonic acid are prepared, among them the potassium, sodium, barium, and 3-cyano-γ,γ′-dipyridyl salts.
KeywordsSodium Sulfur Potassium Organic Chemistry Barium
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