Triethylamine → N-[2-(Aminosulphonyl)4-methoxyphenyl]-4-chlorobutanamide

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Reaction Steps

144 mmol of triethylamine and then, dropwise, a solution containing 135 mmol of 4-chlorobutanoic acid chloride in 30 ml of tetrahydrofuran (THF), are added to a solution containing 96.4 mmol of 2-amino-5-methoxybenzenesulphonamide in 200 ml of THF. After stirring overnight at ambient temperature, the THF is evaporated off and the residue is taken up in water. Following extraction with ethyl acetate, the organic phase is washed and dried. After evaporation, the expected product is obtained in the form of an oil.

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