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Synfacts 2008(8): 0881-0881
DOI: 10.1055/s-2008-1077925
DOI: 10.1055/s-2008-1077925
Polymer-Supported Synthesis
© Georg Thieme Verlag
Stuttgart ˙ New York
Aerobic Oxidation of Alcohols Using Ru-CHNAP-MgO
M. Lakshmi Kantam*, U. Pal, B. Sreedhar, S. Bhargava, Y. Iwasawa, M. Tada, B. M. Choudary
Indian Institute of Chemical Technology and Ogene Systems (I) Pvt. Ltd, Hyderabad, India; EMIT University, Melbourne, Australia; The University of Tokyo, Japan
Further Information
Publication History
Publication Date:
23 July 2008 (online)
Significance
A ruthenium catalyst stabilized on nanocrystalline magnesium oxide (Ru-CHNAP-MgO) was prepared and found to promote aerobic oxidation of alcohols. Thus, Ru-CHNAP-MgO (Ru loading = 1.64 mmol/g) was obtained by the aqueous reaction of RuCl3 and CHNAP-MgO, which was prepared by mixing nanocrystalline MgO and choline hydroxide in THF. Oxidation of benzyl alcohol with O2 was carried out under molecular O2 in the presence of 16 mol% Ru of the Ru-CHNAP-MgO to give benzaldehyde in 98% yield. The Ru catalyst was recovered and reused four times without any loss of catalytic activity (average 98% yields for 4 times).