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Synthesis of benzyl iodides

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Silicaphosphine (Silphos), [P(Cl)3−n(SiO2)n] is a new heterogeneous reagent that converts alcohols and thiols to their corresponding bromides and iodides in the presence of molecular halogen in refluxing CH3CN in high to quantitative yields. Separation of the Silphos oxide byproduct can be achieved by a simple filtration.
N. Iranpoor, H. Firouzabadi, A. Jamalian, F. Kazemi, Tetrahedron, 2005, 61, 5699-5704.