Triethylamine → N-({4-bromo-6-[(methylcarbamoyl)amino]pyridin-2-yl}carbamoyl)-5-methylthiophene-3-sulfonamide

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Reaction Conditions

Reaction Steps

To a solution of 0.089 g 5-methyl-thiophene-3-sulfonic acid amide (example 2a) in 4 ml acetonitrile was added at 0° C. 0.094 g phenylchloroformate and 0.127 g triethylamine. The mixture was stirred at 0° C. for 1 h. To the resulting suspension was added 0.127 g 1-(6-amino-4-bromo-pyridin-2-yl)-3-methyl-urea and the mixture was heated to 60° C. for 18 h. The reaction mixture was partitioned between water and ethyl acetate. The phases were separated and the pH of the aqueous phase was adjusted to 2 by addition of 1N hydrochloric acid. The product was extracted with ethyl acetate. The organic phase was washed with water and brine, dried over sodium sulfate and evaporated to yield 0.080 g of the title compound as an orange yellow powder. MS (ISN) M−H+=445.8 and 447.7

Provenance & Evidence