Trifluoroacetic acid → 4-[5-Fluoro-1-(2-trimethylsilylethanesulfonyl)indol-3-yl]piperidine
反応式
C(OC([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[C:22]3[C:17](=[CH:18][CH:19]=[C:20]([F:23])[CH:21]=3)[N:16]([S:24]([CH2:27][CH2:28][Si:29]([CH3:32])([CH3:31])[CH3:30])(=[O:26])=[O:25])[CH:15]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl>[F:23][C:20]1[CH:21]=[C:22]2[C:17](=[CH:18][CH:19]=1)[N:16]([S:24]([CH2:27][CH2:28][Si:29]([CH3:32])([CH3:31])[CH3:30])(=[O:26])=[O:25])[CH:15]=[C:14]2[CH:11]1[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]1参加物
4
実験手順
To a solution of N-tert-butoxycarbonyl-4-[5-fluoro-1-(2-trimethylsilylethanesulfonyl)indol-3-yl]piperidine (1.33 g, 2.73 mmol), [prepared as described in Step 2, above] in methylene chloride (3 ml), was added trifluoroacetic acid (4 ml). After 2 h, the reaction mixture was concentrated in vacuo and the residue was partitioned between methylene chloride (50 ml) and of 1M NaOH (10 ml). The organic layers were dried over MgSO4 and concentrated in vacuo to afford 4-[5-fluoro-1-(2-trimethylsilylethanesulfonyl)indol-3-yl]piperidine (100%). This material was used in the next step without further purification.