Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide02:44

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

10.5K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.5K
Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate02:21

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

12.1K
Alkenes can be dihydroxylated using potassium permanganate.  The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.
12.1K
Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids02:04

Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids

6.0K
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
6.0K
Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

349
Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
349
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

65.3K
Oxidation–Reduction Reactions
65.3K
Sharpless Epoxidation02:57

Sharpless Epoxidation

4.1K
The conversion of allylic alcohols into epoxides using the chiral catalyst was discovered by K. Barry Sharpless and is known as Sharpless epoxidation. The use of a chiral catalyst enables the formation of one enantiomer of the product in excess. This chiral catalyst is mainly a chiral complex of titanium tetraisopropoxide and tartrate ester (specific stereoisomer). The stereoisomer used in the chiral catalyst dictates the formation of the enantiomer of the product. In other words, the use of...
4.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

An Imidazole-Functionalized Polyoxovanadate with a Classical {V<sub>18</sub>O<sub>42</sub>} Core and Its Photothermal Conversion Behavior.

Inorganic chemistry·2026
Same author

An open hollow polyoxovanadate cage based on {Nb(V<sub>5</sub>)} pentagons with size-selective encapsulation properties.

Chemical communications (Cambridge, England)·2025
Same author

Catalytic Oxidative Valorization of Biobased 5-Hydroxymethylfurfural over Multi-ligand Functionalized Polyoxovanadates.

Inorganic chemistry·2025
Same author

Polyoxometalate-based ionic liquids: efficient reversible phase transformation-type catalysts for thiolation of alcohols to construct C-S bonds.

Dalton transactions (Cambridge, England : 2003)·2024
Same author

Double Cation-π Directed Two-Dimensional Metallacycle-Based Hierarchical Self-Assemblies for Dual-Mode Catalysis.

Journal of the American Chemical Society·2023
Same author

Recent advances in oxidative catalytic applications of polyoxovanadate-based inorganic-organic hybrids.

Dalton transactions (Cambridge, England : 2003)·2023

Related Experiment Video

Updated: Jul 31, 2025

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

7.8K

Redox-switchable Pickering emulsion stabilized by hexaniobate-based ionic liquid for oxidation catalysis.

Wei Lu1, Jing Dong2, Di Zhang1

  • 1Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. chiyingnan7887@bit.edu.cn.

Dalton Transactions (Cambridge, England : 2003)
|May 2, 2023
PubMed
Summary

Novel hexaniobate-based ionic liquids enable redox-controlled Pickering emulsions for efficient interfacial catalysis. This breakthrough facilitates easy catalyst separation and recycling, overcoming traditional limitations in chemical processes.

More Related Videos

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery
09:49

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

10.5K
Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
10:39

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction

Published on: August 23, 2018

7.9K

Related Experiment Videos

Last Updated: Jul 31, 2025

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
05:47

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

7.8K
A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery
09:49

A Protocol for Electrochemical Evaluations and State of Charge Diagnostics of a Symmetric Organic Redox Flow Battery

Published on: February 13, 2017

10.5K
Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
10:39

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction

Published on: August 23, 2018

7.9K

Area of Science:

  • Materials Science
  • Catalysis
  • Supramolecular Chemistry

Background:

  • Pickering emulsions are effective for interfacial catalysis.
  • Current methods for catalyst separation (centrifugation, filtration) are inefficient.
  • Hexaniobate-based ionic liquids offer potential for improved catalytic systems.

Purpose of the Study:

  • Synthesize novel hexaniobate-based ionic liquids.
  • Investigate redox-responsive wettability for Pickering emulsion control.
  • Demonstrate efficient catalytic activity and facile separation/recycling.

Main Methods:

  • Self-assembly of hexaniobate (Nb6) with modified imidazole cations (CnMIM).
  • Redox-responsive wettability tuning using oxidants (H2O2) and reductants (Na2SO3).
  • Application in oxidative desulfurization catalysis.

Main Results:

  • Successful synthesis of [CnMIM]Nb6 ionic liquids (n=12, 14, 16).
  • [C16MIM]Nb6 exhibits redox-switchable wettability via reversible Nb6/peroxohexaniobate transformation.
  • Achieved >99% conversion in oxidative desulfurization with facile catalyst recovery.

Conclusions:

  • Developed redox-responsive hexaniobate ionic liquids for tunable Pickering emulsions.
  • Demonstrated a facile and energy-efficient method for catalyst separation and recycling.
  • Highlighted the potential of these materials for advanced interfacial catalysis applications.