W. Malinka et T. Bodalski, SYNTHESIS OF SOME UBSTITUTED-2,5-DIMETHYLPYRROLE-3,4-DICARBOXYIMIDES FROM ALPHA,BETA-DIACETYLSUCCINATE, Polish Journal of Chemistry, 68(2), 1994, pp. 297-307
Simple procedure synthesis of 1-substituted 2,5-dimethylpyrrole-3,4-di
carboxyimides 6 (via intermediates: diesters 2, diacids 3, anhydrides
4 and amide-acids 5) as interesting substrates in pharmaceutical chemi
stry is described. The structures of the new compounds 3-6 have been c
onfirmed with elemental analysis as well as spectral data.