Suzuki, Katsutoshi published the artcileElectrolytic Partial Fluorination of Organic Compounds.71.Highly Diastereoselective Anodic Fluorination of Sulfides Having Oxygen-Containing Heterocyclic Groups, SDS of cas: 107263-95-6, the publication is Journal of Organic Chemistry (2004), 69(4), 1276-1282, database is CAplus and MEDLINE.
Racemic and nonracemic α-fluoro-β-alkoxysulfides and (arylsulfanylfluoromethyl)dioxolanes such as I are prepared stereoselectively by electrochem. fluorination of β-alkoxysulfides and (arylsulfanylmethyl)dioxolanes such as II with Et3N•3HF in acetonitrile. The 2-spirocyclohexyl-1,3-dioxolanemethyl sulfide II gives the desired α-fluorosulfide in 54% yield and with 80% de.; other sulfides give the desired product in in 10-77% yields and with 13-70% de. The diastereoselectivity of the electrochem. fluorination increases with decreasing Gutmann donor number of the solvent. Et3N•3HF is the most effective fluorination electrolyte used; other amine hydrofluorides give fluorinated product in 0-8% yields and with reduced stereoselectivity. Chem. fluorination of II using Selectfluor also gives I, but in only 5% yield and in 32% de.; chem. fluorination using N-fluoropyridinium salts gives no fluorination products. Decomposition occurs upon acidic hydrolysis of I; oxidation of I to the Ph sulfone followed by acidic hydrolysis yields the nonracemic fluoroinated dihydroxysulfone III. The structure and stereochem. of dioxolanone IV is determined by X-ray crystallog.
Journal of Organic Chemistry published new progress about 107263-95-6. 107263-95-6 belongs to pyridine-derivatives, auxiliary class Fluorination reagent, name is 1-Fluoropyridiniumtriflate, and the molecular formula is C9H9ClN2, SDS of cas: 107263-95-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem