Br[C:2]1[CH:9]=[C:8]([CH3:10])[C:7]([N+:11]([O-:13])=[O:12])=[CH:6][C:3]=1[C:4]#[N:5].[CH3:14][S-:15].[Na+]>CN(C=O)C>[CH3:10][C:8]1[C:7]([N+:11]([O-:13])=[O:12])=[CH:6][C:3]([C:4]#[N:5])=[C:2]([S:15][CH3:14])[CH:9]=1To a solution of 2-bromo-4-methyl-5-nitrobenzonitrile (3 g, 12.45 mmol) in DMF (124 mL), sodium thiomethoxide (1.31 g, 18.67 mmol) was added and the reaction heated to 60° C. for 1 h. The reaction was then cooled to room temperature, quenched with a sat. aq. solution of NaHCO3 and extracted with EtOAc. The organic extract was dried over MgSO4, filtered and concentrated. The resulting residue was purified using FCC eluting with heptanes:EtOAc 1:1 to give the title compound. MS (ESI−) m/z 207.3 (M−H).
読み込み中…