186581-53-3
重氮甲烷
+
699-98-9
2,3-吡啶二羧酸酐
→
~18%
88234-89-3
spiro[7H-pyrano[4,3-b]pyridine-8,2'-oxirane]-5-one
88234-90-6
4-hydroxy(pyridyl-3-carbomethoxy-2-carboxyl)-5-aza-3,4-isochromen-1-one