贝派地酸杂质01

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: A 4.0 ml portion of DMSO was added at −78° C. to a 40 ml dichloromethane solution of 2.5 ml oxalyl chloride and stirred for 10 minutes, and then a dichloromethane solution of 2.7 g of ethyl 6-hydroxy-2,2-dimethylhexanoate synthesized by the technique described in “Tetrahedron”, 2000, vol. 56, p. 9195-9202, was added thereto and stirred at the same temperature for 15 minutes. A 12 ml portion of triethylamine was added to the reaction solution and stirred for 30 minutes, and the reaction was quenched by adding water. Successively, work-up was carried out in the standard method to obtain 2.9 g of ethyl 2,2-dimethyl-6-oxohexanoate as a crude product. EP: 187. 9195-9202, was added stirred at the same temperature for 15 minutes stirred for 30 minutes the reaction was quenched by adding water

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: A 4.0 ml portion of DMSO was added at −78° C. to a 40 ml dichloromethane solution of 2.5 ml oxalyl chloride and stirred for 10 minutes, and then a dichloromethane solution of 2.7 g of ethyl 6-hydroxy-2,2-dimethylhexanoate synthesized by the technique described in “Tetrahedron”, 2000, vol. 56, p. 9195-9202, was added thereto and stirred at the same temperature for 15 minutes. A 12 ml portion of triethylamine was added to the reaction solution and stirred for 30 minutes, and the reaction was quenched by adding water. Successively, work-up was carried out in the standard method to obtain 2.9 g of ethyl 2,2-dimethyl-6-oxohexanoate as a crude product. EP: 187. 9195-9202, was added stirred at the same temperature for 15 minutes stirred for 30 minutes the reaction was quenched by adding water