Triethylamine → HCID 67219807, compound

Participants

Reaction Steps

To a stirred solution of N,N-dimethylethylenediamine (0.67 g, 7.6 mmol) in dioxane (25 ml) was added at room temperature 5-chloro-4-nitrothiophene-2-sulfonyl chloride (2.0 g, 7.64 mmol) and triethylamine (1.17 ml, 8.4 mmol). The light yellow suspension was stirred at room temperature for 17 h, and evaporated. The crude product was further purified by flash chromatography on silica gel (dichloromethane/methanol), and subsequent crystallization from ethyl acetate to yield 5-chloro-4-nitro-thiophene-2-sulfonic acid (2-dimethylamino-ethyl)-amide (1.16 g, 48%) as a light brown solid. MS (ISP) 312.0 [(M−H)−], mp 178° C.

Provenance & Evidence