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

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry01:29

Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry

4.6K
Diels–Alder reactions between cyclic dienes locked in an s-cis configuration and dienophiles yield bridged bicyclic products.
4.6K
Cycloaddition Reactions: MO Requirements for Thermal Activation01:16

Cycloaddition Reactions: MO Requirements for Thermal Activation

3.5K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
3.5K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

10.1K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
10.1K
Regioselectivity of Electrophilic Additions to Alkenes: Markovnikov's Rule02:17

Regioselectivity of Electrophilic Additions to Alkenes: Markovnikov's Rule

13.9K
If a set of reactants can yield multiple constitutional isomers, but one of the isomers is obtained as the major product, the reaction is said to be regioselective. In such reactions, bond formation or breaking is favored at one reaction site over others.
The hydrohalogenation of an unsymmetrical alkene can yield two haloalkane products, depending on which vinylic carbon takes up the halogen. However, one product usually predominates, where hydrogen adds to the vinylic carbon bearing the...
13.9K
Thermal Electrocyclic Reactions: Stereochemistry01:17

Thermal Electrocyclic Reactions: Stereochemistry

2.0K
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
2.0K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

3.8K
The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.
3.8K

You might also read

Related Articles

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

Sort by
Same author

Halogen and hydrogen bonding of 3,6-bis(pyridin-2-yl)-1,2,4,5-tetrazine and 3,6-bis(pyridin-4-yl)-1,2,4,5-tetrazine.

Acta crystallographica. Section C, Structural chemistry·2026
Same author

Ethylene-bridged bis(borylamidinates) as near-UV fluorescent emitters with narrow emission bands.

Chemical communications (Cambridge, England)·2026
Same author

One-Pot Method to Access 1,3,4-Oxadiazol-2(3<i>H</i>)-ones Using Carbonyldiimidazole.

The Journal of organic chemistry·2025
Same author

Comparison of Alkyl-Bridged Bis(N-Heterocyclic Carbene) Nickel Precatalysts: Structure and Catalytic Activity in the Reductive Cleavage and Suzuki-Miyaura Reactions.

ACS omega·2025
Same author

Oxadiargyl analogs as potent inhibitors of <i>Toxoplasma gondii</i> protoporphyrinogen oxidase.

RSC medicinal chemistry·2025
Same author

Diazacyclobutene Ring Cleavage Provides 1,2-Diazetidin-3-ones via Intramolecular Nucleophilic Cyclization.

Organic letters·2025

Related Experiment Video

Updated: Jun 10, 2025

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
09:21

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

8.9K

Room Temperature Regioselective Debenzylative Cycloetherification Reaction.

Samuel Kwain1, Colin D McMillen1, Daniel C Whitehead1,2

  • 1Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States.

ACS Omega
|October 14, 2024
PubMed
Summary
This summary is machine-generated.

A new debenzylative cycloetherification reaction efficiently creates stereodefined hydroxylated tetrahydrofurans from simple sugars. This method offers a mild, room-temperature approach to complex molecules.

More Related Videos

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
04:38

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions

Published on: July 28, 2022

2.9K
Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.3K

Related Experiment Videos

Last Updated: Jun 10, 2025

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether
09:21

Tuning the Acidity of Pt/ CNTs Catalysts for Hydrodeoxygenation of Diphenyl Ether

Published on: August 17, 2019

8.9K
Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
04:38

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions

Published on: July 28, 2022

2.9K
Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
09:45

Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene

Published on: March 20, 2017

10.3K

Area of Science:

  • Organic Chemistry
  • Synthetic Chemistry
  • Carbohydrate Chemistry

Background:

  • Tetrahydrofurans are prevalent structural motifs in natural products and pharmaceuticals.
  • Accessing stereochemically defined hydroxylated tetrahydrofurans often requires complex synthetic routes.
  • Mild and efficient synthetic methodologies are crucial for sustainable chemical synthesis.

Purpose of the Study:

  • To investigate a regio- and stereoselective debenzylative cycloetherification (DBCE) reaction.
  • To synthesize stereodefined hydroxylated tetrahydrofurans from protected hexoses.
  • To establish a mild, room-temperature synthetic route to valuable tetrahydrofuran compounds.

Main Methods:

  • Utilized protected hexoses as starting materials.
  • Employed a debenzylative cycloetherification (DBCE) reaction.
  • Conducted reactions under very mild, room-temperature conditions.

Main Results:

  • Achieved regio- and stereoselective formation of hydroxylated tetrahydrofurans.
  • Demonstrated the utility of the DBCE reaction for synthesizing stereochemically rich tetrahydrofurans.
  • Confirmed the reaction proceeds efficiently under mild conditions.

Conclusions:

  • The DBCE reaction provides a facile route to synthetically useful tetrahydrofuran derivatives.
  • This methodology enables the preparation of complex molecules from simple, abundant starting materials.
  • The mild reaction conditions align with green chemistry principles.