Loading...

Synthesis, characterization and crystal structure of a dioxomolybdenum(VI) complex with a N,O type bidentate Schiff base ligand as a catalyst for homogeneous oxidation of olefins

Bagherzadeh, M ; Sharif University of Technology | 2009

448 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/j.poly.2009.05.036
  3. Publisher: 2009
  4. Abstract:
  5. The synthesis of a Mo(VI) Schiff base complex, cis-[MoO2{(4,6-bis(tert-butyl)-2-{(benzyl)iminomethyl}phenolate)2}], cis-[MoO2(L)2] where L = 4,6-bis(tert-butyl)-2-{(benzyl)iminomethyl}phenol, derived from benzylamine and 3,5-di-tert-butylsalycilaldehyde is reported. Full characterization of this complex was accomplished with elemental analyses, spectroscopic studies (NMR, IR and electronic) and X-ray structure analysis. This complex was tested as a catalyst for the homogeneous oxidation of olefins. The Mo(VI) complex is catalytically active for the epoxidation of aliphatic substrates at 80 °C, yielding the epoxide as the sole product in yields up to 100% and turnover numbers up to 5000. Under the optimized conditions styrene was oxidized in an 81% conversion to produce styrene oxide, benzaldehyde, and acetophenone. © 2009 Elsevier Ltd
  6. Keywords:
  7. Catalytic epoxidation ; Molybdenum(VI) ; Olefin ; Schiff base ; TBHP
  8. Source: Polyhedron ; Volume 28, Issue 12 , 2009 , Pages 2517-2521 ; 02775387 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0277538709003167