Synthesis, characterization and pronounced epoxidation activity of cis-dioxo-molybdenum(VI) tridentate Schiff base complexes using tert-butyl hydroperoxide

Polyhedron ◽  
2010 ◽  
Vol 29 (13) ◽  
pp. 2703-2709 ◽  
Author(s):  
Abdolreza Rezaeifard ◽  
Iran Sheikhshoaie ◽  
Niaz Monadi ◽  
Mahboubeh Alipour
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Tridentate Schiff Base

scholarly journals Formation of Tetrahydrofurano-, Aryltetralin, and Butyrolactone Norlignans through the Epoxidation of 9-Norlignans

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1160
Author(s):  
Patrik A. Runeberg ◽  
Dominique Agustin ◽  
Patrik C. Eklund
Keyword(s):  
Schiff Base ◽  
Double Bond ◽  
Catalytic System ◽  
Kinetic Studies ◽  
Schiff Base Ligands ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Catalyzed Reactions ◽  
Tridentate Schiff Base

Epoxidation of the C=C double bond in unsaturated norlignans derived from hydroxymatairesinol was studied. The intermediate epoxides were formed in up to quantitative conversions and were readily further transformed into tetrahydrofuran, aryltetralin, and butyrolactone products—in diastereomeric mixtures—through ring-closing reactions and intramolecular couplings. For epoxidation, the classical Prilezhaev reaction, using stoichiometric amounts of meta-chloroperbenzoic acid (mCPBA), was used. As an alternative method, a catalytic system using dimeric molybdenum-complexes [MoO2L]2 with ONO- or ONS-tridentate Schiff base ligands and aqueous tert-butyl hydroperoxide (TBHP) as oxidant was used on the same substrates. Although the epoxidation was quantitative when using the Mo-catalysts, the higher temperatures led to more side-products and lower yields. Kinetic studies were also performed on the Mo-catalyzed reactions.

Asymmetric sulfoxidation by C1-symmetric V(IV)O(ONO) (S)-NOBIN Schiff-base vanadyl complexes

2019 ◽  
Vol 97 (9) ◽  
pp. 637-641 ◽  
Author(s):  
Sanmitra Barman ◽  
Christopher J. Levy
Keyword(s):  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Cumene Hydroperoxide ◽  
Cd Spectroscopy ◽  
Schiff Base Complexes ◽  
Moderate Activity ◽  
Butyl Hydroperoxide ◽  
Vanadyl Complexes ◽  
Tert Butyl Hydroperoxide ◽  
Tof Ms

C1-symmetric vanadyl Schiff-base complexes were synthesized by reacting vanadium(IV) acetylacetonate with (S)-3-[(1-(2-hydroxynaphthalen-1-yl)naphthalen-2-ylimino]methyl]-phenanthrene-4-ol and (S)-2-{[1-(2-hydroxynaphthalen-1-yl)naphthalen-2-ylimino]methyl}tetraphene-1-ol. The complexes were characterized by MALDI-TOF-MS, UV–vis, and circular dichroism (CD) spectroscopy. The catalysts showed moderate activity for the oxidation of thioanisole to methyphenylsulfoxide with hydrogen peroxide, tert-butyl hydroperoxide, and cumene hydroperoxide as the oxidants.

ChemInform Abstract: Olefin Epoxidation with tert-Butyl Hydroperoxide Catalyzed by Functionalized Polymer-Supported Copper(II) Schiff Base Complex.

ChemInform ◽  
2012 ◽  
Vol 43 (33) ◽  
pp. no-no
Author(s):  
Sk Manirul Islam ◽  
Anupam Singha Roy ◽  
Paramita Mondal ◽  
Manir Mobarok ◽  
Brindaban Roy ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Complex ◽  
Olefin Epoxidation ◽  
Butyl Hydroperoxide ◽  
Base Complex ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Polymer Supported

Olefin epoxidation with tert-butyl hydroperoxide catalyzed by functionalized polymer-supported copper(II) Schiff base complex

2011 ◽  
Vol 143 (5) ◽  
pp. 815-823 ◽  
Author(s):  
Sk Manirul Islam ◽  
Anupam Singha Roy ◽  
Paramita Mondal ◽  
Manir Mobarok ◽  
Brindaban Roy ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Complex ◽  
Olefin Epoxidation ◽  
Butyl Hydroperoxide ◽  
Base Complex ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Polymer Supported
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