2-bromoethylcyclohexane

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Sodium hydride (0.11 g) was added to a solution of 3-azabicyclo[3.1.0]hexane-2,4dione (0.3 g) and 1-bromo-2-cyclohexylethane (0.52 g) in dimethylformamide (5 ml) and the resulting mixture was stirred at room temperature under a nitrogen atmosphere for 16 hours. The mixture was diluted with water (15 ml) and then extracted with toluene (20 ml). The organic extract was washed with water (15 ml), dried (MgSO4) and evaporated in vacuo. The residue was purified by Kugelrohr distillation (boiling point 130-140° C. @ 0.1 mmHg) to give the title compound as a colourless oil. extracted with toluene (20 ml) The organic extract was washed with water (15 ml) dried (MgSO4) evaporated in vacuo The residue was purified by Kugelrohr distillation (boiling point 130-140° C. @ 0.1 mmHg)

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of 2.5M nBuLi in hexanes (1.9 mL, 4.7 mmol) was added to a solution of diisopropylamine (660 μL, 4.7 mmol) in THF (9.0 mL) at ambient temperature. After 10 min, the mixture was cooled to −78° C. and methyl phenyl sulfone (700 mg, 4.5 mmol) was added to the reaction vessel. The cold bath was removed and after stirring for 30 min, 1-bromo-2-cyclohexylethane (1.3 g, 6.7 mmol) was added to the reaction mixture. The mixture was allowed to warm to ambient temperature and stir for 18 hours. A solution of 2N HCl was added to the reaction mixture followed by extraction with EtOAc (2×). The organic phases were combined, dried (MgSO4) and concentrated. The residue was chromatographed (silica gel; EtOAc/hexanes, 1:8) to afford a clear oil (620 mg, 52%). 1H NMR (CDCl3, MHz) δ 0.75-0.91 (m, 2H), 1.07-1.26 (m, 6H), 1.58-1.76 (m, 7H), 3.06 (t, J=8 Hz, 2H), 7.55-7.70 (m, 3H), 7.92 (m, 2H); MS (CI/NH3) m/z: (M+NH4)+ 284. The cold bath was removed to warm to ambient temperature stir for 18 hours followed by extraction with EtOAc (2×) dried (MgSO4) concentrated The residue was chromatographed (silica gel; EtOAc/hexanes, 1:8)