ethyl 2-(2-chloro-4-fluoropyridin-3-yl)acetate 、
(4aS,5R)-4a-ethyl-5-ethynyl-1-(4-fluorophenyl)-1,4,4a,5,6,7-hexahydrocyclopenta[f]indazol-5-ol 在
四(三苯基膦)钯 copper(l) iodide 、
二异丙胺 作用下,
反应 2.0h,
以88%的产率得到ethyl (2-{2-[(4aS,5R)-4a-ethyl-1-(4-fluorophenyl)-5-hydroxy-1,4,4a,5,6,7-hexahydrocyclopenta[f]indazol-5-yl]ethynyl}-4-fluoropyridin-3-yl)acetate