%0 Journal Article %T A novel and efficient synthesis of 3,3-disubstituted indol-2-ones via Passerini three-component reactions in the presence of 4 Å molecular sieves %A Esmaeili, Abbas Ali %A Saeid Amini-Ghalandarabad %A Saeideh Jannati %J Tetrahedron Letters %@ 0040-4039 %D 2013