反应详情

温度

70 °C

A solution of (1R/S,3R/S,6R/S)-ethyl 2-{[(4-fluorophenyl)sulfanyl]methyl}-5-methyl-cyclohexanecarboxylate and (1R/S,3S/R,6R/S)-ethyl 2-{[(4-fluorophenyl)sulfanyl]-methyl}-5-methylcyclohexanecarboxylate (1:1 mixture, 54 mg, 0.17 mmol) in a mixture of aqueous LiOH (2 M, 1.7 mL, 3.4 mmol), DME (1 mL) and ethanol (0.3 mL) was heated at 70° C. for 7 h. The solution was cooled to room temperature, acidified with aqueous 2 M HCl (0.5 mL) and extracted with ethyl acetate. The organic extracts were concentrated in vacuo to yield (1R/S,3R/S,6R/S)-2-{[(4-fluorophenyl)sulfanyl]methyl}-5-methylcyclohexanecarboxylic acid and (1R/S,3S/R,6R/S)-2-{[(4-fluorophenyl)sulfanyl]methyl}-5-methylcyclohexanecarboxylic acid as a 1:1 mixture of diastereomers.

1. temperatureThe solution was cooled to room temperature
2. extractionextracted with ethyl acetate
3. concentrationThe organic extracts were concentrated in vacuo