Trifluoroacetic acid → HCID 58778388、化合物
反応式
C(OC([N:8]1[CH2:12][C@@H:11]([F:13])[CH2:10][C@H:9]1[CH2:14][O:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([O:22][CH3:23])=[O:21])=O)(C)(C)C.FC(F)(F)C(O)=O>C(Cl)Cl>[F:13][C@@H:11]1[CH2:12][NH:8][C@H:9]([CH2:14][O:15][CH2:16][CH2:17][CH2:18][CH2:19][C:20]([O:22][CH3:23])=[O:21])[CH2:10]1参加物
4
実験手順
Methyl 5-((2S,4S)-1-(tert-butoxycarbonyl)-4-fluoro-2-pyrrolidinylmethoxy)pentanoate (1.09 g, 3.27 mmol) was dissolved in methylene chloride (50 ml). At room temperature, trifluoroacetic acid (10 ml) was added to the resulting solution. The mixture was stirred at the same temperature for 3.5 hours. The residue obtained by distilling off the solvent under reduced pressure was diluted with methylene chloride (50 ml). The solution was basified with 1N NaOH, followed by extraction with methylene chloride. The extract was washed with saturated brine, dried over anhydrous sodium sulfate and distilled under reduced pressure to remove the solvent, whereby the title compound (590 mg, 77%) was obtained as a yellow oil (this compound was provided for the subsequent reaction without further purification).