%0 Journal Article %T An efficient synthesis of 3-cyano-3-benzoyloxyoxindoles via cyanoacylation of isatins in the presence of 4 Å molecular sieves %A Esmaeili, Abbas Ali %A Saeid Amini Ghalandarabad %A Mahdieh Zangouei %J Tetrahedron Letters %@ 0040-4039 %D 2012