反应详情

To a solution of (6′-chloro-2-methyl-[3,4′]bipyridinyl-3′-yl)-methyl-amine in THF is added a solution of n-butyllithium in hexanes at about −78° C. After 15 min 2-(3,5-bis-trifluoromethyl-phenyl)-2-methyl-propionyl chloride is added. The reaction mixture is allowed to warm to room temperature during 30 min. After addition of an aqueous sodium hydroxide solution, the mixture is extracted with dichloromethane, dried and concentrated to give the compound 2-(3,5-Bis-trifluoromethyl-phenyl)-N-(6′-chloro-2-methyl-[3,4′]bipyridinyl-3′-yl)-N-methyl-isobutyramide of formula II-2.

1. extractionthe mixture is extracted with dichloromethane
2. customdried
3. concentrationconcentrated