Ethanesulfonyl chloride → 8-(Ethylsulfonylamino)octanoic acid

Beteiligte Stoffe

Reaktionsschritte

A solution of ethanesulfonyl chloride (1.5 ml, 15.7 mmol) in dioxane (5 ml) was added to a solution of 8-aminooctanoic acid (1 g, 6.28 mmol) in 1N NaOH (22 ml) and dioxane (5 ml), while stirring at 0–5° C. The mixture was allowed to warm to room temperature and stirred for 3.5 minutes. During this period, at 1 hour intervals, the pH was adjusted to 7–8 by addition of 25% NaOH solution. The reaction mixture was washed with diethyl ether (30 ml). The pH was adjusted to 1–2 by addition of 1N HCl and the mixture was extracted with ethyl acetate (70 ml). The organic layer was dried over sodium sulfate and concentrated. The residue was triturated with a mixture of diethyl ether. The solid was collected by filtration and dried under vacuum affording 600 mg of the title compound (38% yield). 1H NMR (DMSO-d6): 11.9 (1H, s); 6.96 (1H, t, J=6 Hz); 2.96 (2H, q, J=7.1); 2.88 (2H, q, J=6.6); 2.2 (2H, t, J=7.3); 1.45 (4H, m); 1.26 (6H, m); 1.18 (3H, t, J=7.3).

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