1-(6-Bromonaphthalene-2-sulfonyl)piperazine → 1-(6-Bromonaphth-2-ylsulphonyl)-4-[4-(1-imidazolyl)benzoyl]piperazine

Beteiligte Stoffe

Reaktionsschritte

By an exactly analogous method to that described in Example 1, starting from 4-(1-imidazolyl)benzoic acid hydrochloride and 1-(6-bromonaphth-2-ylsulphonyl)piperazine was prepared 1-(6-bromonaphth-2-ylsulphonyl)-4-[4-(1-imidazolyl)benzoyl]piperazine (444 mg, 85% yield), m.p. 207-209° C. (from ethanol/hexane), 1H NMR (d6DMSO) 3.0-3.2 ppm (broad s,4H), 3.5-3.8 ppm (broad s,4H), 7.1 ppm (s,1H), 7.4 ppm (d,2H), 7.6 ppm (d,2H), 7.75 ppm (s,1H), 7.8 ppm (t,2H), 8.2 ppm (t,2H), 8.3 ppm (s,1H), 8.4 ppm (s,1H), 8.45 ppm (s,1H), the spectrum also contained signals due to ethanol (<0.2 mol eq.); microanalysis, found: C, 55.0; H, 4.3; N, 10.4; S, 6.2%; C24H21N4O3BrS requires: C, 54.9; H, 4.0; N, 10.7; S, 6.1%; MS (M+H)+ 525/527.

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