反应详情

(S,E)-2-Methyl-N-((3-(trifluoromethyl)pyridin-2-yl)methylene)propane-2-sulfinamide (0.493 g, 1.772 mmol) was dissolved in dry THF (10 mL) and cooled in an ice bath. 3,4-Dichlorophenylmagnesium bromide (Aldrich, 0.5 M solution in THF, 4.0 mL, 2.0 mmol) was added, and the reaction was stirred for 5 minutes. Saturated aqueous NH4Cl (10 mL), H2O (100 mL) and EtOAc (100 mL) were added and the phases were mixed and separated. The organic layer was dried with MgSO4 and evaporated to dryness under reduced pressure. Purification using silica chromatography (hexane to EtOAc gradient) gave (S)—N—((S)-(3,4-dichloro-phenyl)(3-(trifluoromethyl)pyridin-2-yl)methyl)-2-methylpropane-2-sulfinamide.

1. temperaturecooled in an ice bath
2. additionthe phases were mixed
3. customseparated
4. dry with materialThe organic layer was dried with MgSO4
5. customevaporated to dryness under reduced pressure
6. customPurification