[C:1]([NH:5][CH2:6][CH:7]([C:12]1[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][CH:13]=1)[C:8]([O:10]C)=[O:9])([CH3:4])([CH3:3])[CH3:2].O([Si](C)(C)C)[K:20]>C1COCC1>[C:1]([NH:5][CH2:6][CH:7]([C:12]1[CH:17]=[CH:16][C:15]([Cl:18])=[CH:14][CH:13]=1)[C:8]([O-:10])=[O:9])([CH3:4])([CH3:2])[CH3:3].[K+:20]A solution of methyl 3-(tert-butylamino)-2-(4-chlorophenyl)propanoate (1.00 g, 3.71 mmol) in THF (15 mL) was treated with KOTMS (555 mg, 3.89 mmol) at room temperature. The reaction was allowed to stir 18 hours to completion, and the mixture was concentrated in vacuo. The residue was placed under high vacuum for three hours to afford the near-pure potassium 3-(tert-butylamino)-2-(4-chlorophenyl)propanoate (1.06 g, 97%) as a white solid. This material was used without purification. LCMS (APCI+) m/z 256.0 [M+H]+.
Wird geladen…