(Diethylamino)sulfur trifluoride → HCID 178516221, Verbindung

Reaktionsgleichung

O[C@H:2]1[CH2:7][CH2:6][C@H:5]([N:8]2[CH2:12][CH2:11][CH2:10][C:9]2=[O:13])[CH2:4][CH2:3]1.CCN(S(F)(F)[F:20])CC.C([O-])(O)=O.[Na+]>C(Cl)Cl>[F:20][C@@H:2]1[CH2:7][CH2:6][C@H:5]([N:8]2[CH2:12][CH2:11][CH2:10][C:9]2=[O:13])[CH2:4][CH2:3]1

Komponenten

Versuchsvorschrift

To a solution of trans-1-(4-hydroxy-cyclohexyl)-pyrrolidin-2-one (3.2 g) in CH2Cl2 (10 mL) at −30° C., add 2.75 mL of DAST dropwise. Allow the resulting mixture to warm up to room temp and stand for 1 h. To the solution, add 10 mL of 5% aq NaHCO3 and allow to stand at room temp for 1 h. Extract the aqueous layer by CH2Cl2 twice (2×10 mL). Dry the organic layer over Na2SO4, filter and concentrate. Purify the crude material by chromatography to yield 2.05 g of the title compound: mass spectrum (m/z): 186 (M+1).