反应详情

A solution of 3-(4-chloro-benzylamino)-benzoic acid tert-butyl ester (1 g, 0.03 mol), 1-Methyl-1H-Pyrazole-3-sulfonyl chloride (1.13 g, 0.06 mol) and pyridine (0.5 ml 0.06 mol) in dichloromethane (40 ml) were refluxed for 48 hrs. On cooling, water (50 ml) was added with stirring, the organic layer was separated, dried over magnesium sulfate and concentrated in vacuo. The residue was purified by column chromatography (ethyl acetate/dichloromethane 0% to 10% v/v) to afford the title compound as a clear oil (1.33 g). Mass spectrum (ES+) m/z 49 (M+H).

1. temperatureOn cooling
2. customthe organic layer was separated
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated in vacuo
5. customThe residue was purified by column chromatography (ethyl acetate/dichloromethane 0% to 10% v/v)