Activity of B(OEt)(3)-MCM-41 catalyst in the MPV reduction of crotonaldehyde
JOURNAL OF CHEMICAL SCIENCES, cilt.125, sa.6, ss.1385-1393, 2013 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 125 Sayı: 6
- Basım Tarihi: 2013
- Doi Numarası: 10.1007/s12039-013-0530-7
- Dergi Adı: JOURNAL OF CHEMICAL SCIENCES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1385-1393
- Anahtar Kelimeler: MCM-41, B(OEt)(3)-MCM-41, boron tri-ethoxide, Meerwein-Ponndorf-Verley reduction, chemoselective crotonaldehyde reduction, MEERWEIN-PONNDORF-VERLEY, CHEMOSELECTIVE REDUCTION, SELECTIVE HYDROGENATION, UNSATURATED ALDEHYDES, MESOPOROUS MATERIALS, KETONES, BETA, ZR, B((OPR)-PR-I)(3), ISOPROPOXIDE
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Akdeniz Üniversitesi Adresli: Hayır
Özet
Mesoporous silica material MCM-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, high-resolution thermogravimetry (TGA) and N-2 adsorption-desorption isotherms, it was shown that the initial hexagonal structure, the high specific surface area, and porosity are retained in the functionalized material. Si-29 NMR- and B-11 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.