Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[N:8]=[C:7]([O:12][CH:13]1[CH2:18][CH2:17][CH:16]([C:19]([CH3:22])([CH3:21])[CH3:20])[CH2:15][CH2:14]1)[CH:6]=[CH:5]2.[O:23]1CCC[CH2:24]1.C([Li])CCC.C1CCCCC1.CN(C)C=O.Cl.C([O-])(O)=O.[Na+]>>[C:19]([C@H:16]1[CH2:17][CH2:18][C@H:13]([O:12][C:7]2[CH:6]=[CH:5][C:4]3[C:9](=[CH:10][CH:11]=[C:2]([CH:24]=[O:23])[CH:3]=3)[N:8]=2)[CH2:14][CH2:15]1)([CH3:22])([CH3:21])[CH3:20]6-Bromo-2-(4-tert-butyl-cyclohexyloxy)-quinoline (115 mg, 0.317 mmol) in tetrahydrofuran (2.6 mL, 32 mmol) was added 2.0 M of n-butyllithium in cyclohexane (0.48 mL, 0.95 mmol) at −78° C. and was stirred for 15 min. N,N-dimethylformamide (0.12 mL, 1.6 mmol) was added and was stirred for 30 minutes. When the reaction completed, 1 M HCl was added and after 5 min at −78° C., sat. NaHCO3 was added and extracted with EtOAc. The organic layer was concentrated and purified by silica gel chromatography using PE/EA (0-50%) as eluent to give product as a gel (30.6 mg, 31%). LCMS Rt=2.49 min m/z=312.51 ([M+1], 100%).
読み込み中…
