Improved Synthesis of SubstitutedQuinoxalines from New N=N-Polymer-bound 1,2-Diaza-1,3-butadienes

Abstract

The first general protocol for the preparation of different N=N-polymer-bound 1,2-diaza-1,3-butadienes is reported. The utility of these supported reagents in the solid-phase in the preparation of 3-methyl quinoxaline-2-carboxylates by reaction with aromatic 1,2-diamines is presented.

Catalytic [2,3]-sigmatropic rearrangement of sulfonium ylides derived from azoalkenes: non-carbenoid Doyle–Kirmse reaction

“…8 For instance, the Attanasi group utilized azoalkenes as Michael acceptors in various conjugate addition reactions, laying a solid foundation for this field. 9,10 Wang and others demonstrated that in situ generated azoalkenes could serve as heterodienes in copper-catalyzed [4+ n ] reactions. 11 Recently, we and others employed azoalkenes as valuable formal carbon-carbon-nitrogen (CCN) 1,3-dipoles for asymmetric [3+2] reactions.…”