Performance of chiral tetracarbonylmolybdenum pyrindanyl amine complexes in catalytic olefin epoxidation

authors	Neves, P; Nogueira, LS; Valente, AA; Pillinger, M; Goncalves, IS; Sampaio-Dias, IE; Sousa, CAD; Rizzo-Aguiar, F; Rodriguez-Borges, JE
nationality	International
journal	JOURNAL OF ORGANOMETALLIC CHEMISTRY
author keywords	Molybdenum; Tetracarbonyl complexes; Olefin epoxidation; Chiral ligands; 1-pyrindane derivatives; Oxidative decarbonylation
keywords	ALTERNATING COPOLYMERIZATION; HYDROGEN-PEROXIDE; HYBRID MATERIALS; MOLYBDENUM; LIMONENE; OCTAMOLYBDATE; CARBONYL; PRECURSORS; ALCOHOL; ROUTE
abstract	Tetracarbonylmolybdenum(0) complexes of the type cis-[Mo(CO)(4)(L)] containing chiral 7-(1-pyrindanyl) amine ligands were prepared and found to be effective precatalysts for the epoxidation of achiral (cis-cyclooctene) and prochiral (DL-limonene and trans-beta-methylstyrene) olefins at 55 degrees C. Epoxides were the only products formed from cis-cyclooctene (100% yield) and trans-b-methylstyrene (100% selectivity at 82-85% conversion), and the main products formed from DL-limonene (80-82% 1,2-epoxide selectivity at 85% conversion). Characterization of recovered catalysts revealed that the precatalysts were transformed in situ to stable polyoxomolybdate salts containing the beta-octamolybdate anion [beta-Mo8O26](4-), which was responsible for the catalytic reaction. (c) 2018 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE SA
issn	0022-328X
year published	2018
volume	858
beginning page	29
ending page	36
digital object identifier (doi)	10.1016/j.jorganchem.2018.01.003
web of science category	Chemistry, Inorganic & Nuclear; Chemistry, Organic
subject category	Chemistry
unique article identifier	WOS:000425325300005