Lawesson's reagent → Tert-butyl(1-(4-(3-phenyl-5-thioxo-5,6,7,8-tetrahydro-1,6-naphthyridin-2-yl)phenyl)cyclobutyl)carbamate
反応式
[C:1]([O:5][C:6](=[O:35])[NH:7][C:8]1([C:12]2[CH:17]=[CH:16][C:15]([C:18]3[C:27]([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=4)=[CH:26][C:25]4[C:24](=O)[NH:23][CH2:22][CH2:21][C:20]=4[N:19]=3)=[CH:14][CH:13]=2)[CH2:11][CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2].COC1C=CC(P2(SP(C3C=CC(OC)=CC=3)(=S)S2)=[S:45])=CC=1>C1(C)C=CC=CC=1>[C:1]([O:5][C:6](=[O:35])[NH:7][C:8]1([C:12]2[CH:17]=[CH:16][C:15]([C:18]3[C:27]([C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=4)=[CH:26][C:25]4[C:24](=[S:45])[NH:23][CH2:22][CH2:21][C:20]=4[N:19]=3)=[CH:14][CH:13]=2)[CH2:11][CH2:10][CH2:9]1)([CH3:4])([CH3:3])[CH3:2]参加物
4
反応物 2
生成物 1
試薬・触媒・溶媒 1
実験手順
To a solution of tert-butyl(1-(4-(5-oxo-3-phenyl-5,6,7,8-tetrahydro-1,6-naphthyridin-2-yl)phenyl)cyclobutyl)carbamate (223 mg, 0.47 mmol) in toluene (15 mL) was added lawesson's reagent (192 mg, 0.47 mmol) under nitrogen. The resulting mixture was heated under reflux for 2 h. After cooled down to room temperature, the mixture was concentrated to dryness under reduced pressure. The resulting residue was purified by Biotage silica gel chromatography (gradient 0 to 1% MeOH in dichloromethane) to give the title compound as a yellow solid (231 mg, quantitative). 1H NMR (500 MHz, MeOD): 8.76 (1H, s), 7.37-7.33 (4H, m), 7.31-7.28 (3H, m), 7.22-7.20 (2H, m), 3.69 (2H, t), 3.25 (2H, t), 2.49-2.39 (4H, m), 2.15-2.05 (1H, m), 1.91-1.80 (1H, m), 1.45-1.15 (9H, br).