2-(R)-PENTYLSUCCINIC ACID 4-TERT-BUTYL ESTER

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

实验步骤: Sodium hydrogencarbonate (305 mg) and benzyl bromide (1.0 ml) were added Successively to a solution of 2-(R)-(tert-butoxycarbonylmethyl)heptanoic acid (440 mg), prepared in Referential Example 5, in 18 ml of dimethylformamide (DMF), and the resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into water and extracted with ethyl acetate. The organic extract was successively washed with water and a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate. After the solvent had been distilled off under reduced pressure, the residue was purified by column chromatography through silica gel, using a 20:1 mixture of hexane and ethyl acetate as an eluent, to give 476 mg of the desired compound as a colorless oil. extracted with ethyl acetate The organic extract was successively washed with water a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate After the solvent had been distilled off under reduced pressure the residue was purified by column chromatography through silica gel a 20:1 mixture of hexane and ethyl acetate as an eluent

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

实验步骤: Sodium hydrogencarbonate (305 mg) and benzyl bromide (1.0 ml) were added Successively to a solution of 2-(R)-(tert-butoxycarbonylmethyl)heptanoic acid (440 mg), prepared in Referential Example 5, in 18 ml of dimethylformamide (DMF), and the resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into water and extracted with ethyl acetate. The organic extract was successively washed with water and a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate. After the solvent had been distilled off under reduced pressure, the residue was purified by column chromatography through silica gel, using a 20:1 mixture of hexane and ethyl acetate as an eluent, to give 476 mg of the desired compound as a colorless oil. extracted with ethyl acetate The organic extract was successively washed with water a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate After the solvent had been distilled off under reduced pressure the residue was purified by column chromatography through silica gel a 20:1 mixture of hexane and ethyl acetate as an eluent

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

实验步骤: Sodium hydrogencarbonate (305 mg) and benzyl bromide (1.0 ml) were added Successively to a solution of 2-(R)-(tert-butoxycarbonylmethyl)heptanoic acid (440 mg), prepared in Referential Example 5, in 18 ml of dimethylformamide (DMF), and the resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into water and extracted with ethyl acetate. The organic extract was successively washed with water and a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate. After the solvent had been distilled off under reduced pressure, the residue was purified by column chromatography through silica gel, using a 20:1 mixture of hexane and ethyl acetate as an eluent, to give 476 mg of the desired compound as a colorless oil. extracted with ethyl acetate The organic extract was successively washed with water a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate After the solvent had been distilled off under reduced pressure the residue was purified by column chromatography through silica gel a 20:1 mixture of hexane and ethyl acetate as an eluent

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

实验步骤: Sodium hydrogencarbonate (305 mg) and benzyl bromide (1.0 ml) were added Successively to a solution of 2-(R)-(tert-butoxycarbonylmethyl)heptanoic acid (440 mg), prepared in Referential Example 5, in 18 ml of dimethylformamide (DMF), and the resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into water and extracted with ethyl acetate. The organic extract was successively washed with water and a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate. After the solvent had been distilled off under reduced pressure, the residue was purified by column chromatography through silica gel, using a 20:1 mixture of hexane and ethyl acetate as an eluent, to give 476 mg of the desired compound as a colorless oil. extracted with ethyl acetate The organic extract was successively washed with water a saturated aqueous solution of sodium chloride, and dried over anhydrous sodium sulfate After the solvent had been distilled off under reduced pressure the residue was purified by column chromatography through silica gel a 20:1 mixture of hexane and ethyl acetate as an eluent