2-(3,5-dimethylphenoxy)butanoyl chloride

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In 30 ml of benzene were dissolved 1.8 g (0.017 mole) of benzylamine and 1.2 g (0.015 mole) of pyridine, and thereto was added dropwise 3.0 g (0.013 mole) of 2-(3,5-dimethylphenoxy)-butyroyl chloride at room temperature with stirring. After the reaction was carried out for 5 hours, the reaction mixture was washed with water, dilute hydrochloric acid, dilute aqueous sodium hydroxide and then water successively. After the benzene layer was dried, the benzene was removed by distillation. The resultant crude crystals were recrystallized from n-hexane to give 2.4 g of N-benzyl-2-(3,5-dimethylphenoxy)-butyramide melting at 93°-94° C. as colorless needles. the reaction mixture was washed with water, dilute hydrochloric acid, dilute aqueous sodium hydroxide After the benzene layer was dried the benzene was removed by distillation The resultant crude crystals were recrystallized from n-hexane

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 2-(3,5-dimethylphenoxy)-butyric acid [849 g (4.1 moles)], 1075 ml toluene, and 8 ml dimethylformamide was heated to 60° C. in a 5-liter flask fitted with a gas inlet tube, a stirrer, a thermometer and a dry ice condenser. Phosgene, 472 g (4.8 moles), was passed into the solution at 60°-70° C. The mixture was then heated at 60°-70° C. for thirty minutes. The dry ice condenser was then replaced with a water-cooled condenser and the solution was purged with nitrogen to remove excess phosgene and HCl. After 2 hours, purging was discontinued and the solution was vacuum stripped to leave 2-(3,5-dimethylphenoxy)butyryl chloride, 931 g (101% yield), nD30 1.5050. fitted with a gas inlet tube, a stirrer was passed into the solution at 60°-70° C The mixture was then heated at 60°-70° C. for thirty minutes cooled condenser the solution was purged with nitrogen to remove excess phosgene and HCl purging

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In 30 ml of benzene were dissolved 1.8 g (0.017 mole) of benzylamine and 1.2 g (0.015 mole) of pyridine, and thereto was added dropwise 3.0 g (0.013 mole) of 2-(3,5-dimethylphenoxy)-butyroyl chloride at room temperature with stirring. After the reaction was carried out for 5 hours, the reaction mixture was washed with water, dilute hydrochloric acid, dilute aqueous sodium hydroxide and then water successively. After the benzene layer was dried, the benzene was removed by distillation. The resultant crude crystals were recrystallized from n-hexane to give 2.4 g of N-benzyl-2-(3,5-dimethylphenoxy)-butyramide melting at 93°-94° C. as colorless needles. the reaction mixture was washed with water, dilute hydrochloric acid, dilute aqueous sodium hydroxide After the benzene layer was dried the benzene was removed by distillation The resultant crude crystals were recrystallized from n-hexane

Conditions: temp:0.00; pressure:0.00; stir: