Piperidine → 3-Piperidin-1-yl-propane-1-sulfonic acid {3-[4-(1,2-diphenyl-but-1-enyl)-phenyl]-acryloyl}-amide

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Prepared by coupling 1x and piperidine (15 eq) in tetrahydrofuran at reflux. 1z was then precipitated from a mixture of ethyl acetate and 1N HCl as the HCl salt. Yield (60%); 1H NMR (d6-DMSO) δ 11.90 (br s, 1H), 7.47 (d, J=15.7 Hz, 1H), 7.40–7.09 (m, 12H), 6.87 (d, J=7.7 Hz, 2H), 6.53 (d, J=15.7 Hz, 1H), 3.08 (br, 2H), 2.95 (br, 1H), 2.81 (br, 2H), 2.37 (q, J=7.3 Hz, 2H), 2.08 (br, 2H), 1.71 (br, 6H), 1.62 (br, 1H), 0.83 (t, J=7.3 Hz, 3H); APcI m/z: 541 (M−H−).

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