Dimethylsulphamoyl chloride → 6-(2,4-Diamino-pyrimidin-5-ylmethyl)-4-ethoxy-indole-1-sulfonic Acid Dimethylamide

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Reaction Steps

Potassium tert-butylate (42 mg, 0.37 mmol) was added to a solution of 5-(4-ethoxy-1H-indol-6-ylmethyl)-pyrimidine-2,4-diamine (Example 1; 100 mg, 0.353 mmol) in N,N-dimethylformamide (5 mL). After 15 min dimethylsulfamoyl chloride (53 mg, 0.37 mmol) was added, then after 30 min the solvent was distilled off and the residue partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution. The organic layer was washed with brine, dried (MgSO4), and evaporated. Suspension of the residue in ether and collection of the precipitate afforded the title compound (73 mg, 53%). Off-white solid.

Provenance & Evidence