Cesium carbonate → HCID 59752593, compound

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Reaction Steps

To a solution of 1-benzyl-3-(4-chloro-phenyl)-4,5,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridine (Example 25; 0.51 g) in DMF (14 mL) was added 1.39 g of Cs2CO3 and 142 μL of 3-bromo-1-propanol. The mixture was stirred at RT for 12 h and then was diluted with water. The aqueous layer was extracted with Et2O and the combined organic layers were dried over Na2SO4, filtered, and concentrated in vacuo. Chromatography on SiO2 (2% 2 M NH3 in MeOH/CH2Cl2) afforded 0.15 g of the title compound. The product was dissolved in Et2O and treated with excess 1.0 M HCl in Et2O to afford 0.16 g the corresponding HCl salt. MS (ESI): exact mass calculated for C23H25ClN2O, 380.17. found, m/z 381.2 [M+H]+, 383.2 [M+H]+. 1H NMR (500 MHz, CD3OD): 7.37-7.27 (m, 7H), 7.19-7.17 (m, 3H), 5.15 (s, 2H), 4.47 (br s, 2H), 3.93-3.25 (m, 6H), 2.94-2.93 (m, 2H), 2.01-1.96 (m, 2H).

Provenance & Evidence