反应详情

To a stirred solution of 3-aminomethyl-pyridine (1.24 g, 11.5 mmol) in THF (8 ml) was added at 0° C. (ice water bath) commercially available 5-bromo-thiophene-2-sulfonyl chloride (1.0 g, 3.82 mmol) dissolved in THF (8 ml) and triethylamine (0.59 ml, 4.21 mmol). The reaction mixture was stirred at room temperature for 16 h and evaporated. The crude product was further purified by flash chromatography (dichloromethane/methanol) and crystallization from dichloromethane/hexane to yield the title compound (1.23 g, 97%) as a white solid. MS (ISN) 331.0 [(M−H)−], mp 125° C.

1. customevaporated
2. customThe crude product was further purified by flash chromatography (dichloromethane/methanol) and crystallization from dichloromethane/hexane