ClC1C=CC=C(C(OO)=[O:9])C=1.[CH3:12][S:13]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][N:18]=1)(=[O:15])=[O:14]>C(Cl)CCl>[CH3:12][S:13]([CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][N+:18]=1[O-:9])(=[O:15])=[O:14]Meta-chloroperbenzoic acid, 85% solution, 1.27 g., 6 mmoles) was added to 2-(methylsulfonylmethyl)-pyridine .08 g., 6 mmoles) in 10 mls. of ethylene chloride. The resulting solution was allowed to stand at room temperature overnight and then was chilled and filtered. The filtrate was evaporated and cyrstallization of the oily residue was induced by scratching. Recrystallization from toluene and isopropanol gave 0.6 g. of the title compound as white needles (melting range 153-155° C.). Analysis for C7H9NO3S:
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