cross-coupling reaction between α-amino carbonylcompounds and azoles by copper catalysis using di-tert-butyl peroxide (DTBP) as an oxidant is described. A diverse range of azoles undergo the dehydrogenative imidoylation smoothly with various α-amino carbonylcompounds for the exclusive formation of the corresponding N-imidoyl azoles in high yields under air. The synthetic method has the advantages of good
An atom-efficient, catalyst-free and environmentally friendly approach towards the synthesis of 1,3,4-trisubstituted imidazolidines (4a–4p) through a multicomponent reaction involving monophenacyl anilines 1, aromatic amines 2 and formaldehyde 3 has been developed. The reaction proceeds in refluxing ethanol providing higher yields of the imidazolidines.
ABSTRACT An efficient catalyst-free microwave-assisted synthesis of tetrasubstitutedpyrroles using dialkyl acetylenedicarboxylates and substituted monophenacylanilines has been developed. Axial chirality has been noticed in some N-(α-naphthyl/2-isopropylphenyl)-2,3-dicarbethoxy-4-arylpyrroles, but not with N-aryl-2,3-dicarbethoxy-4-(α-naphthyl)pyrrole. GRAPHICAL ABSTRACT