重氮乙烷 、 Z-3-chloro-2-(benzylsulfinyl)propenamide 以
乙醚 为溶剂,
生成
(3RS,4RS,5RS,SR(S))-3-(benzylsulfinyl)-4-chloro-4,5-dihydro-5-methyl-3H-pyrazole-3-carboxamide 、 (3RS,4RS,5SR,SR(S))-3-(benzylsulfinyl)-4-chloro-4,5-dihydro-5-methyl-3H-pyrazole-3-carboxamide