tert-Butyl 4-(5-cyanobenzo[d]oxazole-2-carbonyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate → tert-butyl 4-(1-(5-cyanobenzo[d]oxazol-2-yl)-1-hydroxyethyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate
反応式
[C:1]([C:3]1[CH:4]=[CH:5][C:6]2[O:10][C:9]([C:11]([C:13]3[C:21]([O:22][CH3:23])=[CH:20][C:19]([CH3:24])=[C:18]4[C:14]=3[CH:15]=[CH:16][N:17]4[C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])=[O:12])=[N:8][C:7]=2[CH:32]=1)#[N:2].[CH3:33][Mg]Cl>C1COCC1>[C:28]([O:27][C:25]([N:17]1[C:18]2[C:14](=[C:13]([C:11]([C:9]3[O:10][C:6]4[CH:5]=[CH:4][C:3]([C:1]#[N:2])=[CH:32][C:7]=4[N:8]=3)([OH:12])[CH3:33])[C:21]([O:22][CH3:23])=[CH:20][C:19]=2[CH3:24])[CH:15]=[CH:16]1)=[O:26])([CH3:29])([CH3:31])[CH3:30]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 4-(5-cyanobenzo[d]oxazole-2-carbonyl)-5-methoxy-7-methyl-1H-indole-1-carboxylate (600 mg, 1.39 mmol) in THF (14 mL) at 0° C. methylmagnesium chloride, 3M in THF (1.39 mL, 4.17 mmol) was added. The reaction mixture was stirred for 15 min and then quenched with a saturated aq. solution of NH4Cl at 0° C. The layers were separated and the aqueous layer was extracted with EtOAc. The organic phase was dried over MgSO4 filtered and concentrated. The resulting residue was absorbed onto silica and purified by flash chromatography (0-50% EtOAc:heptanes) to give the title compound. MS (ESI+) m/z 448.22 (M+H).