Dihydroxylation of olefins catalyzed by zeolite-confined osmium(0) nanoclusters: an efficient and reusable method for the preparation of 1,2-cis-diols


Metin O., Alp N. A. , Akbayrak S., Bicer A., GÜLTEKİN M. S. , ÖZKAR S. , ...Daha Fazla

GREEN CHEMISTRY, cilt.14, ss.1488-1492, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 14 Konu: 5
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1039/c2gc16616j
  • Dergi Adı: GREEN CHEMISTRY
  • Sayfa Sayıları: ss.1488-1492

Özet

Addressed herein is a novel, eco-friendly, recoverable, reusable and bottleable catalytic system developed for the dihydroxylation of various olefins yielding 1,2-cis-diols. In our protocol, zeolite-confined osmium (0) nanoclusters (zeolite-Os-0) are used as reusable catalyst and H2O2 served as a co-oxidant. Zeolite-Os-0 are found to be highly efficient and selective catalysts for the dihydroxylation of a wide range olefins in an aqueous acetone mixture at room temperature. In all of the olefins surveyed, the catalytic dihydroxylation reaction proceeds smoothly and the corresponding 1,2-cis-diols are obtained in excellent chemical yield under the optimized conditions. The present heterogeneous catalyst system provides many advantages, such as being eco-friendly and industrially applicable over the traditional homogenous OsO4-NMO system for the dihydroxylation of olefins.