One-pot synthesis of halogen exchanged silsesquioxanes: octakis(3-bromopropyl)octasilsesquioxane and octakis(3-iodopropyl)octasilsesquioxane

2013/01/01 by Vuthichai Ervithayasuporn, N. Pornsamutsin, P. Prangyoo +4 · 1 citation
Materials Science · #Silicone and Siloxane Chemistry #Advanced ceramic materials synthesis #Synthesis and properties of polymers

paper · doi:10.1039/c3dt51373d

openalex publication_date 2013/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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 by (1)H, (13)C and (29)Si NMR spectroscopy, ESI-MS, elemental analysis and single-crystal X-ray diffraction analysis.

Citations

• Critical compilation of scales of solvent parameters. Part I. Pure, non-hydrogen bond donor solvents

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• Iodine [wikipedia]

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