Synthesis of Five-Membered Heterocycles from Maleimides

Article abstract of DOI:10.1055/s-1988-27603

New heterocycles containing maleimide building blocks were prepared via 2-chloro-3-cyanomaleimide or 2,3-dichloromaleimides as key intermediates.Of the heterocyclic amines thus prepared, the following systems are useful as diazo components for preparing d