反应详情

To a solution of 5-chloro-3-methyl-2-pyridin-3-yl-1H-indole hydrochloride (Example 2, 558 mg, 2.0 mmol) in THF (20 mL) is added 0.5 M KHMDS in toluene (8.8 mL, 4.4 mmol) and the mixture is stirred at room temperature for 30 min, whereupon 4-bromomethyl-benzoic acid methyl ester (916 mg, 4.0 mmol). The reaction mixture is stirred for 3 h. Methanol is added to quench the reaction and the solvents are removed in vacuo. The residue is purified by flash chromatography with 1-3% methanol in dichloromethane to give 4-(5-chloro-3-methyl-2-pyridin-3-yl-1H-indol-1-ylmethyl)-benzoic acid methyl ester. MS (ESI) m/z 391.3 and 393.3 (M+H)+.

1. customto quench
2. customthe reaction
3. customthe solvents are removed in vacuo
4. customThe residue is purified by flash chromatography with 1-3% methanol in dichloromethane