Straightforward access to pyrazines, piperazinones, and quinoxalines by reactions of 1,2-diaza-1,3-butadienes with 1,2-diamines under solution, solvent-free, or solid-phase conditions.
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F. Palacios | O. Attanasi | P. Filippone | F. Mantellini | Jesús M. de los Santos | Roberto Ignacio | Domitila Aparicio | Samuele Lillini | Jesús M de Los Santos | J. M. de los Santos