反应详情

To a suspension of 5-(2-chloro-4-fluorophenyl)-4-methyl-1H-pyrrole-3-carboxylic acid (0.61 g, 2.4 mmol) in dichloromethane (30 ml) was added oxalyl chloride (0.41 ml, 4.8 mmol). The mixture was stirred at room temperature for 2.0 h, after which time the solvent was removed on a rotary evaporator. To this brown residue was added THF (40 ml), 4-(methanesulfonyl)aniline hydrochloride (495 mg, 2.38 mmol), and DIEA (1.6 ml, 9.5 mmol). The solution was stirred at room temperature for 20 h. The reaction mixture was concentrated on a rotary evaporator and 2N HCl (30 ml) was added to the residue. The solid was filtered and washed with 2N HCl, water and IPE to give the title compound (812 mg, 84%) as a brown solid.

1. customafter which time the solvent was removed on a rotary evaporator
2. stirringThe solution was stirred at room temperature for 20 h
3. concentrationThe reaction mixture was concentrated on a rotary evaporator and 2N HCl (30 ml)
4. additionwas added to the residue
5. filtrationThe solid was filtered
6. washwashed with 2N HCl, water and IPE