N'1-[((2S)-1-[(4-fluorophenyl)sulfonyl]-2-piperidylcarbonyl)oxy]ethanimidamide 在
(2S)-1-[(4-fluorophenyl)sulfonyl]-2-(3-methyl-1,2,4-oxadiazol-5-yl)piperidine 、 crude product 、 silica gel 、
正己烷 、
乙酸乙酯 作用下,
以
邻二甲苯 为溶剂,
以ethyl acetate in 10% increments, to afford (2S)-1-[(4-fluorophenyl)sulfonyl]-2-(3-methyl-1,2,4-oxadiazol-5-yl)piperidine as an oil的产率得到(2S)-1-[(4-fluorophenyl)sulfonyl]-2-(3-methyl-1,2,4-oxadiazol-5-yl)piperidine