2-bromo-5-(3-chloro-4-isopropoxyphenyl)-1,3,4-thiadiazole 、
6,7-二氢-2H-吡唑并[4,3-c]吡啶-5(4h)-羧酸叔丁酯 、
Dicaesio carbonate 在
碘化亚铜 6,7-二氢-2H-吡唑并[4,3-c]吡啶-5(4h)-羧酸叔丁酯 、
水 、
乙酸乙酯 、 silica gel 、 c-Hexane AcOEt 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以to give 1,1-dimethylethyl 1-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazol-2-yl)-1,3a,4,6,7,7a-hexahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate (Preparation 12b, 214 mg, 9%; LCMS: Retention time 1.58 min; [M+H]+=476, 478) as a cream solid and 1,1-dimethylethyl 2-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazol-2-yl)-2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate (Preparation 12a, 247 mg, 8%; LCMS: Retention time 1.55 min; [M+H]+=476, 478) as a white solid的产率得到1,1-dimethylethyl 1-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,3,4-thiadiazol-2-yl)-1,3a,4,6,7,7a-hexahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate