Sodium Carbonate → 1-(2-{4-[6-Benzyloxy-2-(4-ethanesulfonyl-phenyl)-benzo[b]thiophen-3-yloxy]-phenoxy}-ethyl)-piperidine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

Dissolve 1-{2-[4-(6-benzyloxy-2-bromo-benzo[b]thiophen-3-yloxy)-phenoxy]-ethyl}-piperidine (700 mg, 1.3 mmol) in dioxane (13 mL) and 10% aqueous sodium carbonate (6.9 mL, 6.5 mmol) and add 4-(ethanesulphonyl)benzene boronic acid (430 mg, 2 mmol) and Pd(PPh3)4 (150 mg, 0.13 mmol). Heat to 70° C. and stir overnight. Dilute with diethyl ether (25 mL) and water (25 mL), filter through Celite, and separate layers. Extract the aqueous layer with diethyl ether (50 mL). Combine the organic layers and wash with water (50 mL) and brine (50 mL). Dry with sodium sulfate, filter, and concentrate in vacuo. Chromatograph residue on a SiO2 column eluting with methanol in dichloromethane (0 to 5%) to give 400 mg of the title compound (49%): mass spectrum (ion spray): m/z=628.3 (M+H).

Herkunft & Nachweise