Performance of chiral tetracarbonylmolybdenum pyrindanyl amine complexes in catalytic olefin epoxidation

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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.

keywords

ALTERNATING COPOLYMERIZATION; HYDROGEN-PEROXIDE; HYBRID MATERIALS; MOLYBDENUM; LIMONENE; OCTAMOLYBDATE; CARBONYL; PRECURSORS; ALCOHOL; ROUTE

subject category

Chemistry

authors

Neves, P; Nogueira, LS; Valente, AA; Pillinger, M; Goncalves, IS; Sampaio-Dias, IE; Sousa, CAD; Rizzo-Aguiar, F; Rodriguez-Borges, JE

our authors

foto Anabela Tavares Aguiar Valente

Anabela Tavares Aguiar Valente

Principal Researcher
foto Isabel Maria de Sousa Gonçalves

Isabel Maria de Sousa Gonçalves

Associate Professor
foto Lucie Solange Nogueira

Lucie Solange Nogueira

PhD Student
foto Martyn Pillinger

Martyn Pillinger

Principal Researcher
foto Patrícia dos Santos Neves

Patrícia dos Santos Neves

Assistant Researcher

Groups

G1 - Porous Materials and Nanosystems
G4 - Renewable Materials and Circular Economy

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

acknowledgements

This work was developed in the scope of the project (Associate Laboratory) CICECO-Aveiro Institute of Materials-POCI-01-0145-FEDER-007679 [FCT (Fundacao para a Ciencia e a Tecnologia) ref. UID/CTM/50011/2013], financed by national funds through the FCT/MEC and when applicable co-financed by FEDER (Fundo Europeu de Desenvolvimento Regional) under the PT2020 Partnership Agreement. The FCT and the European Union are acknowledged for Ph.D. grants to L.N. (PD/BD/109666/2015) and I.E.S-D. (SFRH/BD/93632/2013), and post-doctoral grants to P.N. (SFRH/BPD/110530/2015) and C.A.D.S. (SFRH/BPD/80100/2011) co-funded by MCTES and the European Social Fund through the program POPH of QREN.

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Publication Details

type
Journal Article
year
2018
journal
JOURNAL OF ORGANOMETALLIC CHEMISTRY
volume
858
publisher
ELSEVIER SCIENCE SA
issn
0022-328X
digital object identifier
10.1016/j.jorganchem.2018.01.003
web of science article identifier
WOS:000425325300005

Journal Metrics (JCR 2019)

Journal Impact Factor
2.304
Journal Impact Factor (5 yrs)
1.963
category normalized journal percentile
55.965

Citations

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