A hitherto undescribed addition of the lithium salt of dimethyl methylphosphonate to N-substituted phthalimides

Abstract The hitherto unknown addition of the lithium salt of dimethyl methylphosphonate 6 to the N -substituted phthalimides 7 is described. This reaction allows the synthesis of new systems in which the phosphono group is connected to the heterocyclic skeleton of an isoindolinone at the 3-position by one methylene group.