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)

Authors: KARIM AKBARI DILMAGHANI, FAZEL NASUHI PUR

Abstract: 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, ^1H-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

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