methyl 2-(aminomethyl)-5-chlorobenzofuran-7-carboxylate trifluoroacetate 、
3,4-dihydro-1H-pyrano[3,4-c]pyridin-1-one hydrochloride 在
吡啶 作用下,
反应 5.0h,
以18%的产率得到methyl 5-chloro-2-((1-oxo-3,4-dihydro-2,7-naphthyridin-2(1H)-yl)methyl)benzofuran-7-carboxylate