A novel, convenient, and efficient procedure for the synthesis of spiroisoindoline-1,5′-oxazolidine derivatives

A novel, convenient, and practical one-pot procedure for the direct synthesis of spiroisoindoline-1,5′-oxazolidine derivatives is described via oxidative cleavage of 3a,8a-dihydroxyindeno[2,1-d]imidazole-2,8-diones with lead(IV) acetate at room temperature.