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Selective conversion of nitroalcohols to nitroolefins over sulfonic acid functionalized mesoporous SBA-15 material

A variety of α,β-substituted nitroalcohols were converted to their corresponding nitroolefins under mild reaction conditions over propylsulfonic acid-functionalized SBA-15 material. Different substituting groups at the α-position underwent the reactions with ease and high yields. [Display omitted] ►...

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Published in:Journal of molecular catalysis. A, Chemical Chemical, 2013-02, Vol.367, p.1-6
Main Authors: Sasidharan, Manickam, Bhaumik, Asim
Format: Article
Language:English
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Summary:A variety of α,β-substituted nitroalcohols were converted to their corresponding nitroolefins under mild reaction conditions over propylsulfonic acid-functionalized SBA-15 material. Different substituting groups at the α-position underwent the reactions with ease and high yields. [Display omitted] ► Selective dehydration of α,β-substituted nitroalcohols. ► Synthesis of nitroolefins over heterogeneous solid acid catalyst. ► Propylsulfonic acid functionalized ordered mesoporous SBA-15. ► Organocatalysis under heterogeneous conditions. Highly ordered 2D-hexagonal mesoporous SBA-15 has been synthesized by using triblock copolymer as template and its surface has been functionalized by 3-propylsulfonic acid group via post-synthetic grafting with 3-mercaptopropyltrimethoxy silane. A variety of α,β-substituted nitroalcohols are converted to their corresponding nitroolefins under mild reaction conditions using this 3-propylsulfonic acid-functionalized SBA-15 material. Nitroalcohols with open-chain, cyclic, and heterocyclic substituents at the α-position are smoothly converted into their corresponding nitroolefins in high yields over this solid acid catalyst. Propylsulfonic acid functionalized SBA-15 materials are found to be more efficient catalysts than microporous zeolites under similar reaction conditions.
ISSN:1381-1169
1873-314X
DOI:10.1016/j.molcata.2012.11.006