1: With potassium carbonate; N-fluoro-N-(phenylsulfonyl)benzene-sulfonamide in N,N-dimethyl-formamide; acetonitrile T=-15°C; 2: With hydrogenchloride in dichloromethane; N,N-dimethyl-formamide; acetonitrile T=20°C; 2 h;

1: With potassium carbonate; N-fluoro-N-(phenylsulfonyl)benzene-sulfonamide in N,N-dimethyl-formamide; acetonitrile T=-15°C; 2: With hydrogenchloride in dichloromethane; N,N-dimethyl-formamide; acetonitrile T=20°C; 2 h;