反应详情

To a solution of 2-Chloro-7-cyclopentyl-6-methyl-7H-pyrrolo[2,3-d]pyrimidine (164 mg, 0.70 mmol) in dichloromethane (3 mL) is added N-chlorosuccinimide (0.4M in DCM, 1.1 eq) over 1 h. The reaction mixture is allowed to stir for 3 days at room temperature. The reaction mixture is diluted with dichloromethane and washed with saturated aqueous sodium bicarbonate followed by brine. The organic phase is concentrated and the crude product is purified by normal phase chromatography (SiO2, EtOAc/heptane) to obtain 2,5-Dichloro-7-cyclopentyl-6-methyl-7H-pyrrolo[2,3-d]pyrimidine (158 mg, 84%).

1. washwashed with saturated aqueous sodium bicarbonate
2. concentrationThe organic phase is concentrated
3. customthe crude product is purified by normal phase chromatography (SiO2, EtOAc/heptane)