Turkish Journal of Chemistry, Vol.35, No.3, 455-462, 2011
Synthesis and characterization of new symmetrical 3,6-bis[(25,26,27-tripropoxy-28-(3-(4-iodophenyl) propoxy)-p-tert-butyl calix[4]arene ethynyl]-9H-fluoren-9-one by Sonogashira coupling as a novel precursor for synthesis of quinodimethane (QDM)
Novel symmetrical 3,6-bis[(25,26,27-tripropoxy-28-(3-(4-iodophenyl)propoxy)-p-tert-butyl calix[4] arene ethynyl]-9H-fluoren-9-one with a cone conformation was synthesized by palladium-catalyzed coupling of (25,26,27-tripropoxy-28-(3-(4-iodophenyl) propoxy)-p-tert-butyl calix[4] arene and 3,6-diethynyl-9H-fluoren-9- one. Its structure was confirmed by FT-IR, (1)H-NMR, and (13)C-NMR spectroscopy, and elemental analysis and positive ion FAB mass spectrometry.
Keywords:Synthesis;3,6-diethynyl-9H-fluoren-9-one;p-tert-butyl calix[4]arene;FAB mass;palladium-catalyzed