Browsing by Author "C. Phurat"

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    One-pot synthesis of halogen exchanged silsesquioxanes: Octakis(3-bromopropyl)octasilsesquioxane and octakis(3-iodopropyl) octasilsesquioxane
    (2013-10-07) V. Ervithayasuporn; N. Pornsamutsin; P. Prangyoo; K. Sammawutthichai; T. Jaroentomeechai; C. Phurat; T. Teerawatananond; Mahidol University; Chulalongkorn University
    Metal halides, solvent effects, phase transfer catalysts, alkylating agent and reaction times were found to have important roles to complete halogen exchange reactions in "one pot" synthesis, starting from octakis(3-chloropropyl)octasilsesquioxane to obtain more reactive halide compounds: octakis(3-bromopropyl)octasilsesquioxane and octakis(3-iodopropyl) octasilsesquioxane. To confirm the complete halogen exchange, the desired products were characterized by1H,13C and29Si NMR spectroscopy, ESI-MS, elemental analysis and single-crystal X-ray diffraction analysis. © 2013 The Royal Society of Chemistry.