EFFECT OF METAL IONS IN ORGANIC SYNTHESIS. PART XXXIII. 2-HYDROXY-4-PYRROLINES AS STABLE INTERMEDIATES IN THE SYNTHESIS OF 1-AMINOPYRROLE DERIVATIVES

Article abstract of DOI:10.1016/S0040-4020(01)83468-2

The reactions of conjugated aroylazoalkenes with β-diketones and β-ketoesters in the presence and in the absence of copper(II) chloride as catalyst have been studied.In the first case, 1-aminopyrrole derivatives have been obtained, while in the second cas