β-Nitroacrylates asKey Starting Materials for the Uncatalysed One-Pot Synthesisof Polyfunctionalized Dihydroquinoxalinone Derivatives, via an anti-Michael Reaction

The reaction of o-phenylenediamine with β-nitroacrylates allows the in situ preparation of dihydroquinoxalinones, via an anti-Michael reaction, under uncatalysed reaction conditions.