Synthesis 2006(10): 1682-1688  
DOI: 10.1055/s-2006-926455
SPECIALTOPIC
© Georg Thieme Verlag Stuttgart · New York

Heterogenization of 5 -C 5 Me 5 )Ru(PPh 3 ) 2 Cl and Its Catalytic Application for Cyclopropanation of Styrene Using Ethyl Diazoacetate

Ayyamperumal Sakthivela, Filipe E. Pedroa, Anthony S. T. Chiangb, Fritz E. Kühn*a,c
a Lehrstuhl für Anorganische Chemie der Technischen Universität München, Lichtenbergstraße 4, 85747 Garching bei München, Germany
Fax: +49(89)28913473; e-Mail: fritz.kuehn@ch.tum.de;
b National Central University, Chung-Li, Taiwan 320, Republic of China
c Department of Chemistry, Instituto Tecnológico e Nuclear (ITN), Estrada Nacional 10, 2686-953 Sacavém, Portugal
Further Information

Publication History

Received 12 December 2005
Publication Date:
27 April 2006 (online)

Abstract

5-C5Me5)Ru(PPh3)2Cl (1) is heterogenized on the surface of mesoporous molecular sieves by direct grafting on mesoporous aluminosilicates or by reaction of an aminosilane-linker-modified silicate surface with the chloride ligand. Elemental analyses reveal that the grafted samples contain 0.2-1.8 wt% Ru. The retaining of long-range ordering of mesoporous MCM-41 and MCM-48 after grafting is evidenced from XRD, N2 adsorption-desorption and TEM analysis. FT-IR, TG-MS, 29Si and 1H CP MAS-NMR spectra confirm the successful grafting of complex 1 on the surface of these mesoporous materials. Mesoporous materials grafted with complex 1 are found to be promising catalysts for the cyclopropanation of styrene with ethyl diazoacetate.