Synlett 2010(13): 2019-2023  
DOI: 10.1055/s-0030-1258484
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© Georg Thieme Verlag Stuttgart ˙ New York

Novel Periodic Mesoporous Silica Chlorides (PMSCl) with 2D P 6 mm Hexagonal Structures: Efficient Catalysts for the Beckmann Rearrangement

Babak Karimi*, Hesam Behzadnia
Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Gava Zang, Zanjan 45137-6731, Iran
Fax: +98(241)4153232; e-Mail: karimi@iasbs.ac.ir;
Further Information

Publication History

Received 12 May 2010
Publication Date:
09 July 2010 (online)

Abstract

A family of ordered mesoporous silica chloride ­(SBA-Cl) with 2D P 6 mm hexagonal structures and high surface areas was prepared through treatment of SBA-15 with thionyl chloride. The materials were shown to have excellent catalytic activity in Beckmann rearrangements of ketoximes. The catalyst (SBA-Cl-2) was recovered and reused for at least three reaction cycles without significant change in its nanostructure as evidenced by surface analysis.