2-methylcycloheptan-1-one

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Cool a solution of 17 g 2-methylcycloheptanone in 75 ml concentrated hydrochloric acid and add protionwise 13.2 g sodium azide. Stir the reaction of 0° for 1 hour then at room temperature for 2 hours. Add the reaction to 150 ml ice water, bring to pH 7 with potassium carbonate and extract with chloroform. Treat the extracts with charcoal, dry over MgSO4, filter and concentrate to obtain crude 8-methylperhydroazocin-2-one. Obtain a pure product by recrystallization from hexane (m.p. 70-73). the reaction of 0° for 1 hour Add extract with chloroform Treat the extracts with charcoal dry over MgSO4 filter concentrate

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Cool a solution of 17 g 2-methylcycloheptanone in 75 ml concentrated hydrochloric acid and add protionwise 13.2 g sodium azide. Stir the reaction of 0° for 1 hour then at room temperature for 2 hours. Add the reaction to 150 ml ice water, bring to pH 7 with potassium carbonate and extract with chloroform. Treat the extracts with charcoal, dry over MgSO4, filter and concentrate to obtain crude 8-methylperhydroazocin-2-one. Obtain a pure product by recrystallization from hexane (m.p. 70-73). the reaction of 0° for 1 hour Add extract with chloroform Treat the extracts with charcoal dry over MgSO4 filter concentrate

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: n-BuLi (2M solution) (35.86 mmol, 17.93 mL) was slowly added at 0° C. to a solution of DIPEA (5 mL, 35.86 mmol) in THF (45 mL). After stirred for 30 min at 0° C. the solution was cooled to −78° C. Cycloheptanone (4.0 gms, 4.2 mL, 35.66 mmol, 1.0 eqv) was added drop wise and the resulting mixture was stirred for 30 min at −78° C. before adding methyl iodide (2.96 mL, 47.4 mmol, 1.33 eq). The cooling bath was removed and the solution was allowed to reach ambient temperature and stirred at RT for 15 hours before being quenched with aqueous saturated NH4Cl. The mixture was extracted with DCM. The organic layer was washed with 0.1 M aqueous HCl and aqueous saturated NaHCO3, dried over Na2SO4, filtered, and evaporated. The residue was purified by short path distillation to give 2.8 g of 2-methyl-cycloheptanone (62% yield). was cooled to −78° C the resulting mixture was stirred for 30 min at −78° C. The cooling bath was removed to reach ambient temperature stirred at RT for 15 hours before being quenched with aqueous saturated NH4Cl The mixture was extracted with DCM The organic layer was washed with 0.1 M aqueous HCl and aqueous saturated NaHCO3 dried over Na2SO4 filtered evaporated The residue was purified by short path distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Cool a solution of 17 g 2-methylcycloheptanone in 75 ml concentrated hydrochloric acid and add protionwise 13.2 g sodium azide. Stir the reaction of 0° for 1 hour then at room temperature for 2 hours. Add the reaction to 150 ml ice water, bring to pH 7 with potassium carbonate and extract with chloroform. Treat the extracts with charcoal, dry over MgSO4, filter and concentrate to obtain crude 8-methylperhydroazocin-2-one. Obtain a pure product by recrystallization from hexane (m.p. 70-73). the reaction of 0° for 1 hour Add extract with chloroform Treat the extracts with charcoal dry over MgSO4 filter concentrate

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: n-BuLi (2M solution) (35.86 mmol, 17.93 mL) was slowly added at 0° C. to a solution of DIPEA (5 mL, 35.86 mmol) in THF (45 mL). After stirred for 30 min at 0° C. the solution was cooled to −78° C. Cycloheptanone (4.0 gms, 4.2 mL, 35.66 mmol, 1.0 eqv) was added drop wise and the resulting mixture was stirred for 30 min at −78° C. before adding methyl iodide (2.96 mL, 47.4 mmol, 1.33 eq). The cooling bath was removed and the solution was allowed to reach ambient temperature and stirred at RT for 15 hours before being quenched with aqueous saturated NH4Cl. The mixture was extracted with DCM. The organic layer was washed with 0.1 M aqueous HCl and aqueous saturated NaHCO3, dried over Na2SO4, filtered, and evaporated. The residue was purified by short path distillation to give 2.8 g of 2-methyl-cycloheptanone (62% yield). was cooled to −78° C the resulting mixture was stirred for 30 min at −78° C. The cooling bath was removed to reach ambient temperature stirred at RT for 15 hours before being quenched with aqueous saturated NH4Cl The mixture was extracted with DCM The organic layer was washed with 0.1 M aqueous HCl and aqueous saturated NaHCO3 dried over Na2SO4 filtered evaporated The residue was purified by short path distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Cool a solution of 17 g 2-methylcycloheptanone in 75 ml concentrated hydrochloric acid and add protionwise 13.2 g sodium azide. Stir the reaction of 0° for 1 hour then at room temperature for 2 hours. Add the reaction to 150 ml ice water, bring to pH 7 with potassium carbonate and extract with chloroform. Treat the extracts with charcoal, dry over MgSO4, filter and concentrate to obtain crude 8-methylperhydroazocin-2-one. Obtain a pure product by recrystallization from hexane (m.p. 70-73). the reaction of 0° for 1 hour Add extract with chloroform Treat the extracts with charcoal dry over MgSO4 filter concentrate