Hydrosilylation of Ketones Catalyzed with Mg-Al-O-t-Bu Hydrotalcite

Abstract

In this article, a simple and efficient procedure of hydrosilylation of ketones catalyzed with Mg-Al-O-t-Bu hydrotalcite was described. Hydrosilylation of ketones with triethoxysilane was carried out smoothly at room temperature in the presence of Mg-Al-O-t-Bu hydrotalcite without solvent, and the conversions of ketones were more than 90%. The recyclability of Mg-Al-O-t-Bu hydrotalcite was also tested.

Keywords:

• Hydrosilylation
• ketones
• Mg-Al-O-t-Bu hydrotalcite
• triethoxysilane

ACKNOWLEDGMENT

We are grateful to the Program of Zhejiang Province (2008C14041) for financial support.

Notes

Note. Acetophenone 1.0 mmol; HSi(OEt)₃ 2.0 mmol; 0.5 h; no solvent; rt.

^a The second run.

Note. Acetophenone 1.0 mmol; HSi(OEt)₃ 2.0 mmol; 0.5 h; Mg-Al-O-t-Bu-HT 0.01 g.

Note. Ketone 1 mmol; HSi(OEt)₃ 2.0 mmol; Mg-Al-O-t-Bu-HT 0.01 g; 0.5 h; no solvent; rt.