Dioxidomolybdenum(VI) and -tungsten(VI) complexes with tripodal amino bisphenolate ligands as epoxidation and oxo-transfer catalysts
(2017) In Polyhedron 134. p.275-281- Abstract
The molybdenum(VI) and tungsten(VI) complexes [MO2(L)] (M = Mo (1), W (2), H2L = bis(2-hydroxy-3,5-di-tert-butybenzyl)morpholinylethylamine) were synthesized and the complexes were used to catalyze oxotransfer reactions, viz. sulfoxidation, epoxidation and benzoin oxidation. For comparison, the same reactions were catalyzed using the known complexes [MO2(L′)] (M = Mo (3), W (4), H2L′ = bis(2-hydroxy-3,5-di-tert-butybenzyl)ethanolamine) and [MO2(L″)] (M = Mo (5), W (6), H2L″ = bis(2-hydroxy-3,5-di-tert-butybenzyl)diethyleneglycolamine). The oxo atom transfer activity between DMSO and benzoin at 120 °C was identical for all studied catalysts. Reasonable catalytic activity... (More)
The molybdenum(VI) and tungsten(VI) complexes [MO2(L)] (M = Mo (1), W (2), H2L = bis(2-hydroxy-3,5-di-tert-butybenzyl)morpholinylethylamine) were synthesized and the complexes were used to catalyze oxotransfer reactions, viz. sulfoxidation, epoxidation and benzoin oxidation. For comparison, the same reactions were catalyzed using the known complexes [MO2(L′)] (M = Mo (3), W (4), H2L′ = bis(2-hydroxy-3,5-di-tert-butybenzyl)ethanolamine) and [MO2(L″)] (M = Mo (5), W (6), H2L″ = bis(2-hydroxy-3,5-di-tert-butybenzyl)diethyleneglycolamine). The oxo atom transfer activity between DMSO and benzoin at 120 °C was identical for all studied catalysts. Reasonable catalytic activity was observed for sulfoxidation by the molybdenum complexes, but all tungsten complexes were found to be inactive. Similarly, the molybdenum complex 1 exhibited relatively good epoxidation activity, while the corresponding tungsten complex 2 catalyzed only the epoxidation of cis-cyclooctene with low activity.
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- author
- Hossain, Kamal LU ; Schachner, Jörg A. ; Haukka, Matti ; Lehtonen, Ari ; Mösch-Zanetti, Nadia C. and Nordlander, Ebbe LU
- organization
- publishing date
- 2017-09-25
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Epoxidation, Molybdenum, Oxygen atom transfer, Sulfoxidation, Tungsten
- in
- Polyhedron
- volume
- 134
- pages
- 7 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85021884119
- wos:000409151700033
- ISSN
- 0277-5387
- DOI
- 10.1016/j.poly.2017.04.036
- language
- English
- LU publication?
- yes
- id
- c9cad2ed-04c0-4e19-adbc-69ad80df4140
- date added to LUP
- 2017-07-24 08:45:47
- date last changed
- 2024-07-07 21:52:20
@article{c9cad2ed-04c0-4e19-adbc-69ad80df4140, abstract = {{<p>The molybdenum(VI) and tungsten(VI) complexes [MO<sub>2</sub>(L)] (M = Mo (1), W (2), H<sub>2</sub>L = bis(2-hydroxy-3,5-di-tert-butybenzyl)morpholinylethylamine) were synthesized and the complexes were used to catalyze oxotransfer reactions, viz. sulfoxidation, epoxidation and benzoin oxidation. For comparison, the same reactions were catalyzed using the known complexes [MO<sub>2</sub>(L′)] (M = Mo (3), W (4), H<sub>2</sub>L′ = bis(2-hydroxy-3,5-di-tert-butybenzyl)ethanolamine) and [MO<sub>2</sub>(L″)] (M = Mo (5), W (6), H<sub>2</sub>L″ = bis(2-hydroxy-3,5-di-tert-butybenzyl)diethyleneglycolamine). The oxo atom transfer activity between DMSO and benzoin at 120 °C was identical for all studied catalysts. Reasonable catalytic activity was observed for sulfoxidation by the molybdenum complexes, but all tungsten complexes were found to be inactive. Similarly, the molybdenum complex 1 exhibited relatively good epoxidation activity, while the corresponding tungsten complex 2 catalyzed only the epoxidation of cis-cyclooctene with low activity.</p>}}, author = {{Hossain, Kamal and Schachner, Jörg A. and Haukka, Matti and Lehtonen, Ari and Mösch-Zanetti, Nadia C. and Nordlander, Ebbe}}, issn = {{0277-5387}}, keywords = {{Epoxidation; Molybdenum; Oxygen atom transfer; Sulfoxidation; Tungsten}}, language = {{eng}}, month = {{09}}, pages = {{275--281}}, publisher = {{Elsevier}}, series = {{Polyhedron}}, title = {{Dioxidomolybdenum(VI) and -tungsten(VI) complexes with tripodal amino bisphenolate ligands as epoxidation and oxo-transfer catalysts}}, url = {{http://dx.doi.org/10.1016/j.poly.2017.04.036}}, doi = {{10.1016/j.poly.2017.04.036}}, volume = {{134}}, year = {{2017}}, }