Alternate Method for the Dimerization of 2-Benzylidene inden-1-one Derivatives: Synthesis of 1,3-Diaryl-1,3,3a,8a-tetrahydro-8H-spiro[cyclopenta[a]indene-2,2'-indene]-1',8(3'H)-diones Journal title: Cumhuriyet Science journal Authors: Hayreddin GEZEGEN Subject(s):