Selective synthesis of 6,8-di-t-butylated flavan over Zn-Al containing mesoporous silica catalysts
Dalton Transactions, ISSN: 1477-9234, Vol: 41, Issue: 46, Page: 14197-14203
2012
- 5Citations
- 7Captures
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Article Description
We demonstrate a much green synthesis method for highly selective synthesis of 6,8-di-t-butylated flavan (6,8-DTBF) by liquid phase alkylation of 2,4-di-t-butylphenol (2,4-DTBP) with cinnamyl alcohol (Cin-OH) over mesoporous Zn-Al-MCM-41 catalysts synthesized under direct basic hydrothermal method. The main alkylated product, 6,8-DTBF is importantly used as an intermediate in the manufacture of biosynthetic organic compounds. The recyclable mesoporous Zn-Al-MCM-41 catalysts have also been reused in this reaction to study their catalytic activities. The influences of various reaction parameters such as temperature, time, ratios of reactant (2,4-DTBP-to-Cin-OH) have been extensively investigated for the synthesis of 6,8-DTBF. In addition, dimethyl sulfoxide (DMSO) has also been used as a solvent in this catalytic reaction. The mesoporous Zn-Al-MCM-41(75) gives excellent catalytic activity with 6,8-DTBF selectivity (86.0%) and 2,4-DTBP conversion (63.1%), and these catalytic results have also compared with that obtained using other mesoporous and microporous catalysts. On the basis of catalytic activity obtained by using the all catalysts, the Zn-Al-MCM-41(75) catalyst is found to be a highly active, recyclable and eco-friendly heterogeneous catalyst in the liquid-phase alkylation of 2,4-DTBP. © The Royal Society of Chemistry 2012.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84868651466&origin=inward; http://dx.doi.org/10.1039/c2dt31409f; http://www.ncbi.nlm.nih.gov/pubmed/23047727; https://xlink.rsc.org/?DOI=c2dt31409f; https://dx.doi.org/10.1039/c2dt31409f; https://pubs.rsc.org/en/content/articlelanding/2012/dt/c2dt31409f
Royal Society of Chemistry (RSC)
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