Pyridine → 2-Chloro-4-[5-(6-trifluoromethyl-pyridin-3-yl)-2,3-dihydro-indole-1-sulfonyl]-benzonitrile

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Reaction Conditions

Reaction Steps

1.18 g of commercially available 3-Chloro-4-cyano-benzenesulfonyl chloride were dissolved in 30 ml dichloromethane. Then 880 mg 5-(6-Trifluoromethyl-pyridin-3-yl)-2,3-dihydro-1H-indole were added followed by 15 ml pyridine and 407 mg 4-dimethylaminopyridine. The mixture was stirred at 80° C. for thirty minutes. The mixture was diluted with 100 ml of dichloromethane and washed with 100 ml water and 100 ml saturated NaHCO3 solution. The organic layer was then separated and dried over MgSO4. The solvent was removed in vacuo to obtain 1.49 g 2-Chloro-4-[5-(6-trifluoromethyl-pyridin-3-yl)-2,3-dihydro-indole-1-sulfonyl]-benzonitrile.

Provenance & Evidence