[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:8]1[S:12](=[O:14])(=[O:13])[O:11][CH2:10][CH2:9]1>C(#N)C>[C:2]1([NH2+:1][CH2:10][CH2:9][CH2:8][S:12]([O-:14])(=[O:13])=[O:11])[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1A mixture of aniline (7 mmol) and propane sultone (10 mmol) was heated in 10 mL of acetonitrile at 12.0-130° C. for 9 h in a pressure tube under argon atmosphere. The product was allowed to cool to room temperature and the solid of 3-phenylammonio-1-propanesulfonate was filtered and air-dried. Yield: 95%.
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