反应详情

In dry methanol were dissolved 520 mg (2 mmol) of 4-(acetylthio)-1-(tert-butoxycarbonyl)piperidine, and 420 μl (2 mmol) of a 28% sodium methoxide-methanol solution were added to the mixture under ice-cooling and under a nitrogen atmosphere, followed by stirring of the resulting mixture for 40 minutes. Then, 173 μl of acetic acid were added to the mixture and the solvent was distilled off at room temperature, followed by diluting of the residue with ethyl acetate. The mixture was washed successively with an aqueous sodium hydrogencarbonate solution and an aqueous NaCl solution in the order and the solvent was distilled off to obtain 430 mg of reddish orange oil. This product was used for a subsequent reaction without purification.

1. additionwere added to the mixture under ice-
2. temperaturecooling and under a nitrogen atmosphere
3. distillationthe solvent was distilled off at room temperature
4. additionby diluting of the residue with ethyl acetate
5. washThe mixture was washed successively with an aqueous sodium hydrogencarbonate solution
6. distillationan aqueous NaCl solution in the order and the solvent was distilled off