Corrigendum to “An efficient and rapid intramolecular aza-Michael addition of 2′-aminochalcones using ionic liquids as recyclable reaction media” [Tetrahedron Lett. 53 (2012) 4059–4061]

Aza‐Michael Reaction: A Decade Later – Is the Research Over?

“…The catalyst works well for enones bearing both electron-withdrawing and electron-donating groups. [174] Ten years later, a simple and efficient protocol for construction of aza-flavanones 73 from the same 2'-aminochalcones 72 is proposed. [175] In this case, carbon tetrabromide is used instead of ionic liquid.…”

“…No obvious effects resulting from the electronic or steric nature of the aromatic ring substituents are observed. The catalyst works well for enones bearing both electron‐withdrawing and electron‐donating groups [174] . Ten years later, a simple and efficient protocol for construction of aza‐flavanones 73 from the same 2′‐aminochalcones 72 is proposed [175] .…”