Synthesis and application of tin triflate-containing MCM-41 as heterogeneous Lewis acid catalysts for the Mukaiyama aldol reaction at room temperature

Saito, Masakazu; Ikeda, Hikaru; Horiuchi, Yu; Matsuoka, Makoto

doi:10.1007/s11164-013-1458-8

Cited by 9 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electron-rich oxygen atoms of water molecules tend to coordinate the Lewis acid sites leading to suppression of the catalytic activity by hindering substrate coordination or even decomposition of the sites. 216,217 Hydrophobic zeolite structures, which limit the presence of water molecules within its structure, are an elegant solution for performing Lewis acid catalysis in presence of water. One such example is Sn-beta, a silicious beta framework containing small amounts of tetrahedral framework incorporated Sn.…”

Section: Concept 2: Lewis Aciditymentioning

confidence: 99%

Potential and challenges of zeolite chemistry in the catalytic conversion of biomass

et al. 2016

View full text Add to dashboard Cite

Increasing demand for sustainable chemicals and fuels has pushed academia and industry to search for alternative feedstocks replacing crude oil in traditional refineries. As a result, an immense academic attention has focused on the valorisation of biomass (components) and derived intermediates to generate valuable platform chemicals and fuels. Zeolite catalysis plays a distinct role in many of these biomass conversion routes. This contribution emphasizes the progress and potential in zeolite catalysed biomass conversions and relates these to concepts established in existing petrochemical processes. The application of zeolites, equipped with a variety of active sites, in Brønsted acid, Lewis acid, or multifunctional catalysed reactions is discussed and generalised to provide a comprehensive overview. In addition, the feedstock shift from crude oil to biomass involves new challenges in developing fields, like mesoporosity and pore interconnectivity of zeolites and stability of zeolites in liquid phase. Finally, the future challenges and perspectives of zeolites in the processing of biomass conversion are discussed.

show abstract

Section: Concept 2: Lewis Aciditymentioning

confidence: 99%

Potential and challenges of zeolite chemistry in the catalytic conversion of biomass

et al. 2016

View full text Add to dashboard Cite

show abstract

MCM‐41‐Supported Linear Alkylamine‐Catalyzed In Situ Generation of Unstable Trifluoroacetaldehyde and Successive syn‐Selective Direct Aldol Reaction with Cyclic Ketones

et al. 2017

View full text Add to dashboard Cite

Fixation of linear alkylamine on the ordered mesoporous silica (MCM-41) is effective on not only in situ generation of gaseous and unstable trifluoroacetaldehyde from its hemiacetal but also successive syn-selective direct aldol reaction with cyclohexanone giving the corresponding syn-aldol product. As results, the aldol product produced from cyclohexanone was obtained in good to excellent yield without the formation of a complex mixture, compared to our previous results with a mixture of catalysts such as organic amine/amorphous silica or organic amine/acetic acid. The obtained syn-selectivity is opposite to the L-proline derivatives-catalyzed anti-selective direct aldol reaction. Not only various aldehydes but also 1,3-dicarbonyl compounds, such as 2,4-pentandione and ethyl 3-oxobutanoate, are also participated in the MCM-41-supported Nmethylpropylamine direct aldol reaction of CF 3 CHO hemiacetal, respectively.

show abstract

Synthesis, characterization and catalytic performance of ordered mesoporous Sn–Al catalysts

Zhou

Qin³

et al. 2015

J Porous Mater

View full text Add to dashboard Cite

Synthesis and application of tin triflate-containing MCM-41 as heterogeneous Lewis acid catalysts for the Mukaiyama aldol reaction at room temperature

Cited by 9 publications

References 20 publications

Potential and challenges of zeolite chemistry in the catalytic conversion of biomass

Potential and challenges of zeolite chemistry in the catalytic conversion of biomass

MCM‐41‐Supported Linear Alkylamine‐Catalyzed In Situ Generation of Unstable Trifluoroacetaldehyde and Successive syn‐Selective Direct Aldol Reaction with Cyclic Ketones

Synthesis, characterization and catalytic performance of ordered mesoporous Sn–Al catalysts

Contact Info

Product

Resources

About