108319-31-9
1-[3-Oxo-4-(triphenylphosphoranyliden)butyl]-2,5-pyrrolidindion
→
~63%
108292-81-5
1,2,5,6-tetrahydroindolizine-3,7-dione
73971-21-8
1-(1,2,3,5,6,8a-hexahydroindolizin-8-yl)butan-1-one