Water → Methyl 3-{[(2,4-dimethoxybenzyl)(1,3-thiazol-2-yl)amino]sulfonyl}benzoate

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반응 단계

Sodium hydride (60% in mineral oil, 239 mg, 5.99 mmol, 1.5 eq) was added portionwise to a solution of N-(2,4-dimethoxybenzyl)-1,3-thiazol-2-amine (Preparation 6, 1 g, 3.995 mmol, 1 eq) in THF (10 ml) at 0° C. The mixture was stirred for 40 minutes before the addition of methyl 3-(chlorosulfonyl)benzoate (937, 3.995 mmol, 1 eq) and the reaction mixture stirred for a further 1 hour at 0° C. and 5 hours at room temperature. Water (2 ml) was added and the THF evaporated in vacuo. The residue was extracted from water (10 ml) into ethyl acetate (3×5 ml), washed with brine, dried over magnesium sulphate, filtered and evaporated in vacuo to yield methyl 3-{[(2,4-dimethoxybenzyl)(1,3-thiazol-2-yl)amino]sulfonyl}benzoate.

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