SYNLETT, cilt.27, sa.3, ss.412-416, 2016 (SCI-Expanded)
Novel furo-imidazo[3.3.3]propellanes are synthesized via reactions of thiocarbonohydrazides with (1,3-dioxo-2,3-dihydro-1H-inden-2-ylidene)propanedinitrile in tetrahydrofuran. A rationale for these conversions involving nucleophilic addition on the dicyanomethylene carbon atom is presented. The structures of these unexpected products are confirmed by using IR, NMR, mass spectrometry and single-crystal X-ray diffraction.