Tetrahedron

Silicaphosphine (Silphos): a filterable reagent for the conversion of alcohols and thiols to alkyl bromides and iodides

N Iranpoor, H Firouzabadi, A Jamalian, F Kazemi

Index: Iranpoor, Nasser; Firouzabadi, Habib; Jamalian, Arezu; Kazemi, Foad Tetrahedron, 2005 , vol. 61, # 23 p. 5699 - 5704

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Citation Number: 40

Abstract

Silicaphosphine (Silphos),[P (Cl) 3− n (SiO2) n], as a new heterogeneous reagent is introduced. This reagent converts alcohols and thiols to their corresponding bromides and iodides in the presence of X2 (X= Br, I) in refluxing CH3CN in high to quantitative yields. Use of Silphos provides a highly practical method for the easy separation of the Silphos oxide byproduct by a simple filtration.