Water → {4-[1-(2-Dimethylamino-acetyl)-piperidin-4-yl]-phenyl}-carbamic acid tert-butyl ester

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Reaction Steps

Dimethylamino-acetyl chloride (0.14 g, 0.86 mmol) and (4-piperidin-4-yl-phenyl)-carbamic acid tert-butyl ester (0.20 g, 0.72 mmol) were combined in CH2Cl2 (5 mL) and triethylamine (0.21 g, 2.2 mmol) was added. After 6 h, water (5 mL) was added. The reaction mixture was extracted with CH2Cl2 (3×5 mL) and the combined organic extracts were dried (MgSO4) and concentrated. The compound was found to be unstable on silica and therefore carried on without further purification. 1H NMR (400 MHz, CDCl3) δ (ppm): 9.04 (s, 1H), 7.52 (d, 2H, J=8.5 Hz), 7.16 (d, 2H, J=8.5 Hz), 3.06 (s 2H), 2.76-2.82(m, 2H), 2.59-2.65 (m, 1H), 2.37 (s, 6H), 1.78-1.81 (m, 2H), 1.54-1.64 (m, 2H), 1.48 (s, 9H), 1.30 (br s, 2H).

Provenance & Evidence