1-chloro-4-pent-4-enylbenzene

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: To a solution of 5-(4-chlorophenyl)pent-1-ene (43.2 g) in dichloromethane (400 mL) was added dropwise with stirring a mixture of 40% peracetic acid (200 mL) and sodium acetate (6.5 g). The resulting mixture was heated under reflux for 2 hours, cooled, and stirred with water (400 mL). The dichloromethane layer was separated, washed with dilute aqueous potassium carbonate until neutral, water, and dried (MgSO4) and evaporated to give 46.7 g of 5-(4-chlorophenyl)-1,2-epoxypentane as a colorless oil. The resulting mixture was heated under reflux for 2 hours cooled The dichloromethane layer was separated washed with dilute aqueous potassium carbonate until neutral, water dried (MgSO4) evaporated

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

実験手順: To a solution of 5-(4-chlorophenyl)pent-1-ene (43.2 g) in dichloromethane (400 mL) was added dropwise with stirring a mixture of 40% peracetic acid (200 mL) and sodium acetate (6.5 g). The resulting mixture was heated under reflux for 2 hours, cooled, and stirred with water (400 mL). The dichloromethane layer was separated, washed with dilute aqueous potassium carbonate until neutral, water, and dried (MgSO4) and evaporated to give 46.7 g of 5-(4-chlorophenyl)-1,2-epoxypentane as a colorless oil. The resulting mixture was heated under reflux for 2 hours cooled The dichloromethane layer was separated washed with dilute aqueous potassium carbonate until neutral, water dried (MgSO4) evaporated

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

実験手順: To a flame-dried flask containing 7.75 g of magnesium turnings under ether was added 4-chlorophenethyl bromide (70 g) in anhydrous ether (250 mL) at such a rate as to maintain a gentle reflux. When the addition was complete, the mixture was heated under reflux for an additional hour and then treated dropwise over one hour with allyl bromide (27.6 mL, 38.6 g) in ether (75 mL) maintaining a gentle reflux. The resulting mixture was stirred overnight at room temperature and then poured onto 600 mL of ice-cold dilute sulfuric acid. The product was extracted with ethyl acetate and the combined extracts were washed with dilute aqueous potassium carbonate, dried (MgSO4) and evaporated. The resulting brown oil was distilled under reduced pressure to give 43 g of 5-(4-chlorophenyl)pent-1-ene, b.p. 74°-80° (2 mmHg) as a colorless liquid. to maintain a gentle reflux When the addition the mixture was heated under reflux for an additional hour maintaining a gentle reflux The product was extracted with ethyl acetate the combined extracts were washed with dilute aqueous potassium carbonate dried (MgSO4) evaporated The resulting brown oil was distilled under reduced pressure

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: To a solution of 5-(4-chlorophenyl)pent-1-ene (43.2 g) in dichloromethane (400 mL) was added dropwise with stirring a mixture of 40% peracetic acid (200 mL) and sodium acetate (6.5 g). The resulting mixture was heated under reflux for 2 hours, cooled, and stirred with water (400 mL). The dichloromethane layer was separated, washed with dilute aqueous potassium carbonate until neutral, water, and dried (MgSO4) and evaporated to give 46.7 g of 5-(4-chlorophenyl)-1,2-epoxypentane as a colorless oil. The resulting mixture was heated under reflux for 2 hours cooled The dichloromethane layer was separated washed with dilute aqueous potassium carbonate until neutral, water dried (MgSO4) evaporated

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

実験手順: To a flame-dried flask containing 7.75 g of magnesium turnings under ether was added 4-chlorophenethyl bromide (70 g) in anhydrous ether (250 mL) at such a rate as to maintain a gentle reflux. When the addition was complete, the mixture was heated under reflux for an additional hour and then treated dropwise over one hour with allyl bromide (27.6 mL, 38.6 g) in ether (75 mL) maintaining a gentle reflux. The resulting mixture was stirred overnight at room temperature and then poured onto 600 mL of ice-cold dilute sulfuric acid. The product was extracted with ethyl acetate and the combined extracts were washed with dilute aqueous potassium carbonate, dried (MgSO4) and evaporated. The resulting brown oil was distilled under reduced pressure to give 43 g of 5-(4-chlorophenyl)pent-1-ene, b.p. 74°-80° (2 mmHg) as a colorless liquid. to maintain a gentle reflux When the addition the mixture was heated under reflux for an additional hour maintaining a gentle reflux The product was extracted with ethyl acetate the combined extracts were washed with dilute aqueous potassium carbonate dried (MgSO4) evaporated The resulting brown oil was distilled under reduced pressure