Reactions of N-alkylazinium cations. 2. Reaction of quinoxalinium salts with malonodinitrile and cyanoacetic ester

Multicomponent Reactions of Carbonyl Compounds and Derivatives of Cyanoacetic Acid: Synthesis of Carbo- and Heterocycles

“…51 The treatment of three equivalents of malononitrile with 3-methylcyclohex-2-enone (82) The reaction of quinoxalinium salt 91 with two equivalents of malononitrile produced 2-iminocyclopentaquinoxalines 92 (Scheme 21). 55 The literature data presented above demonstrates that many multicomponent reactions utilize malononitrile as a characteristic reagent in carbocyclic synthesis with valuable synthetic potential.…”