4-Bromoaniline → 1-[6-(4-Bromo-phenylamino)-5-nitro-pyrimidin-4-yl]-piperidine-4-carboxylic acid ethyl ester
Reaktionsgleichung
[CH2:1]([O:3][C:4]([CH:6]1[CH2:11][CH2:10][N:9]([C:12]2[C:17]([N+:18]([O-:20])=[O:19])=[C:16](Cl)[N:15]=[CH:14][N:13]=2)[CH2:8][CH2:7]1)=[O:5])[CH3:2].[Br:22][C:23]1[CH:29]=[CH:28][C:26]([NH2:27])=[CH:25][CH:24]=1>O1CCOCC1>[CH2:1]([O:3][C:4]([CH:6]1[CH2:11][CH2:10][N:9]([C:12]2[C:17]([N+:18]([O-:20])=[O:19])=[C:16]([NH:27][C:26]3[CH:28]=[CH:29][C:23]([Br:22])=[CH:24][CH:25]=3)[N:15]=[CH:14][N:13]=2)[CH2:8][CH2:7]1)=[O:5])[CH3:2]Komponenten
4
Versuchsvorschrift
[6-chloro-5-nitro-pyrimidin-4-yl]-piperidine-4-carboxylic acid ethyl ester (415 mg, 1.32 mmol) and 4-bromoaniline (309 mg, 1.80 mmol) were dissolved in anhydrous 1,4-dioxane (0.5-1 ml) and irradiated in a sealed microwave reaction tube at 250° C. for 300 seconds. The reaction mixture was passed through a silica plug [SiO2; EtOAc/hexane; 20:80]. Yield 0.070 g, 12%. Yellow solid. 1H NMR 400 MHz CDCl3 δ(ppm): 9.98 (s, 1H); 8.03 (s, 1H); 7.41 (m, 2H); 7.17 (m, 2H); 4.09 (m, 2H); 3.83 (m, 2H); 3.16 (m, 2H); 2.77 (m, 1H); 1.97 (m, 2H); 1.78 (m, 2H); 1.20 (m, 3H). LCMS (ESI) m/z 451, 452 (M+H+, 100%)