Activity of B(OEt)3-MCM-41 catalyst in the MPV reduction of crotonaldehyde

Journal of Chemical Sciences

Burcu Uysal1¹ 

[1] Department of Chemistry, Akdeniz University, 07058 Antalya, Turkey$$

关键词: MCM-41;    B(OEt)3-MCM-41;    boron tri-ethoxide;    Meerwein-Ponndorf-Verley reduction;    chemoselective crotonaldehyde reduction.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Mesoporous silica materialMCM-41 was functionalized with boron tri-ethoxide (B(OEt)3) groups by the grafting method and denoted as `B(OEt)3-MCM-41’. With the use of TEM, X-ray diffraction, highresolution thermogravimetry (TGA) and N2 adsorption-desorption isotherms, it was shown that the initial hexagonal structure, the high specific surface area, and porosity are retained in the functionalized material. 29Si NMR- and 11B NMR- spectroscopies revealed that the surface of MCM-41 consists of boron alkoxide species. The Meerwein-Ponndorf-Verley (MPV) reduction of crotonaldehyde to but-2-en-1-ol was conducted in the presence of B(OEt)3-MCM-41 catalyst. MPV reduction of crotonaldehyde also showed that functionalization leads to the creation of Lewis acidic sites. A combination of mesoporous structure with Lewis acidic properties makes the MCM-41 functionalized with boron tri-ethoxide groups, useful as solid Lewis acid catalysts.

【 授权许可】

Unknown