CS(O[CH2:6][C@H:7]1[CH2:12][CH2:11][CH2:10][CH2:9][C@@H:8]1[NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])(=O)=O.[C-:21]#[N:22].[K+].O>CS(C)=O>[C:21]([CH2:6][C@H:7]1[CH2:12][CH2:11][CH2:10][CH2:9][C@@H:8]1[NH:13][C:14](=[O:20])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])#[N:22]A solution of tert-butyl N-[(1S,2S)-2-(methylsulfonyloxymethyl)cyclohexyl]carbamate (1.8 g) in dry DMSO was added with potassium cyanide (0.52 g, 7.76 mL) and the mixture was then heated at 90° C. under N2 for 4 hours. The mixture was cooled and then poured on to water (50 mL) and extracted with ether (3×30 mL). The combined organic phases were washed with brine and concentrated in vacuo to provide the title compound.
Wird geladen…