The Piperazine Space in Isocyanide-based MCR Chemistry. In: Orru RVA, Ruijter E, editors. Synthesis of Heterocycles via Multicomponent Reactions I. Berlin: Springer Berlin Heidelberg; 2010. pp. 85-127. [DOI: 10.1007/7081_2010_27]

Recent advances in the synthesis of nitrogen heterocycles via radical cascade reactions using isonitriles as radical acceptors

Radical isonitrile insertion reactions are highly valuable for the construction of N-containing heterocycles such as phenanthridines, quinolines, isoquinolines, quinoxalines and indoles.

An efficient synthesis of symmetric and unsymmetric bis-(β-aminoamides) via Ugi multicomponent reaction

A library of symmetrical and unsymmetrical bis-(β-aminoamides) has been prepared starting from symmetrical secondary diamines by using a double Ugi four-component reaction. A sacrifical Mumm rearrangement, thanks to the use of 2-hydroxymethyl benzoic acid, is necessary to suppress the competing split-Ugi reaction, increasing the yield and simplifying the purification step. The scope, the reaction conditions, and the role of water in trapping the nitrilium intermediate are also discussed.