H. Heaney et al., THE OXIDATION OF HOMOPHTHALIMIDE DERIVATIVES BY DIOXYGEN IN ALKALINE MEDIA AND CLEAVAGE-CYCLIZATION REACTIONS, Tetrahedron letters, 38(17), 1997, pp. 3051-3054
The oxidation of alpha-alkylhomophthalimide derivatives by dioxygen in
the presence of ethanolic sodium hydroxide leads to the rapid formati
on of alpha-hydroxy-alpha-alkylhomophthalimide derivatives and hence,
as a result of ring cleavage and lactone formation, to alpha-amido-alp
ha-alkylphthalides, potential precursors to phthalide isoquinoline alk
aloids and analogues. (C) 1997 Elsevier Science Ltd.