tert-Butyl piperazine-1-carboxylate → HCID 89676941, 화합물

반응식

[F:1][C:2]1[C:3]([N:10]2[CH2:15][CH2:14][O:13][CH2:12][CH2:11]2)=[C:4]([CH:7]=[CH:8][CH:9]=1)[CH:5]=O.[N:16]1([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:21][CH2:20][NH:19][CH2:18][CH2:17]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl>[F:1][C:2]1[C:3]([N:10]2[CH2:15][CH2:14][O:13][CH2:12][CH2:11]2)=[C:4]([CH2:5][N:19]2[CH2:18][CH2:17][N:16]([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:21][CH2:20]2)[CH:7]=[CH:8][CH:9]=1

참가 물질

실험 절차

A 50 mL round-bottom flask was charged with 3-fluoro-2-(morpholin-4-yl)benzaldehyde (0.500 g, 2.39 mmol, 1.00 equiv), tert-butyl piperazine-1-carboxylate (404 mg, 2.17 mmol, 0.91 equiv), dichloromethane (10 mL). The mixture was stirred at room temperature for 0.5 hour. Sodium triacetoxyborohydride (1.38 g, 6.51 mmol, 2.72 equiv) was added. The resulting solution was stirred overnight at room temperature and diluted with dichloromethane. The resulting mixture was washed with H2O (3×10 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was chromatographed on a silica gel column with ethyl acetate/petroleum ether (1/3) to yield 1.00 g (crude) of tert-butyl 4-[[3-fluoro-2-(morpholin-4-yl)phenyl]methyl]piperazine-1-carboxylate as colorless oil. LCMS (ESI, m/z): 380 [M+H]+.