Unexpected intramolecular cyclization of some 2′-aminochalcones to indolin-3-ones mediated by Amberlyst®-15

Unexpected intramolecular cyclization of some 2′-aminochalcones to indolin-3-ones mediated by Amberlyst®-15

Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 49, Issue 34, 18 August 2008, Pages 5028-5031

Rodrigo Abonia, Paola Cuervo, Juan Castillo, Braulio Insuasty, Jairo Quiroga, Manuel Nogueras, Justo Cobo,