氨基甲酸叔丁酯 、
tert-butyl 7-[8-chloro-7-fluoro-3-[(1-methylpyrrolidin-3-yl)oxycarbonylamino]-6-isoquinolyl]-8-methyl-2,3-dihydropyrido[2,3-b][1,4]oxazine-1-carboxylate 在
tris(dibenzylideneacetone)dipalladium(0) chloroform complex 、
2-(二环己基膦)3,6-二甲氧基-2′,4′,6′-三异丙基-1,1′-联苯 、
caesium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
反应 2.0h,
以64.1%的产率得到7-[8-(tert-butoxycarbonylamino)-7-fluoro-3-[(1-methylpyrrolidin-3-yl)oxycarbonylamino]-6-isoquinolinyl]-8-methyl-2,3-dihydropyridino[2,3-b][1,4]oxaazine-1-carboxylic acid tert-butyl ester