Acetone → HCID 57786171、化合物
反応式
[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[CH:20]=[CH:19][C:18](Cl)=[CH:17][C:16]=4[Cl:22])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:23]([OH:26])[CH2:24][CH3:25])=[CH:4][CH:3]=1.C([Li])CCC.[CH3:32][C:33]([CH3:35])=[O:34]>O1CCCC1>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:15]4[CH:20]=[CH:19][C:18]([C:33]([OH:34])([CH3:35])[CH3:32])=[CH:17][C:16]=4[Cl:22])[CH2:12][CH2:13][CH2:14][N:7]3[C:6]=2[C:5]([CH:23]([OH:26])[CH2:24][CH3:25])=[CH:4][CH:3]=1参加物
5
実験手順
To a solution of 1-[9-chloro-1-(2,4-dichlorophenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl]propan-1-ol (300.0 mg, 0.659 mmol) in tetrahydrofuran (6.0 mL) was added n-butyllithium (1.60 M solution in n-hexane, 1.03 mL, 1.65 mmol) at −78° C., and the mixture was stirred for 30 min. To the mixture was added acetone (0.24 mL, 3.30 mmol) at −78° C. The mixture was stirred at room temperature for 4.5 hrs. The mixture was quenched with aqueous saturated ammonium chloride and extracted with ethyl acetate (×3). The combined organic layer was washed with brine (×1), dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography eluting with a 10-70% ethyl acetate/n-hexane gradient mixture to give the title compound as a colorless amorphous (80.0 mg, 0.185 mmol, 28%).