Recueil des Travaux Chimiques des Pays-Bas · 1959 · 15 citations · 5 references
Natural SciencesChemistryCatalysisOrganic ChemistrySulfur Compounds
Abstract The sulphonation of pyridine‐N‐oxide with fuming sulphuric acid and mercuric sulphate as a catalyst yields, together with the 3‐sulphonic acid as chief product, the 2‐ and 4‐isomers.
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