Jove
Visualize
Contact Us

Related Concept Videos

Electrophilic Addition to Alkynes: Halogenation02:38

Electrophilic Addition to Alkynes: Halogenation

8.2K
Introduction
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
8.2K
Nomenclature of Alkynes02:39

Nomenclature of Alkynes

18.0K
Alkynes are unsaturated hydrocarbons characterized by the presence of carbon-carbon triple bonds and have a general formula CnH2n-2. The nomenclature of alkynes follows a set of rules similar to alkanes and alkenes; however, alkynes bear the suffix "-yne" instead of "-ane" or "-ene." There are two approaches to naming alkynes:
18.0K
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation02:24

Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation

7.6K
Introduction
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
7.6K
Preparation of Alkynes: Alkylation Reaction02:27

Preparation of Alkynes: Alkylation Reaction

10.0K
Introduction
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.
10.0K
Structure and Physical Properties of Alkynes02:37

Structure and Physical Properties of Alkynes

10.3K
Introduction:
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
10.3K
Preparation of Alkynes: Dehydrohalogenation02:34

Preparation of Alkynes: Dehydrohalogenation

15.7K
Introduction
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
15.7K

You might also read

Related Articles

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

Sort by
Same author

Extended π-Conjugation and iClick Turn-on of Phosphorescence.

Inorganic chemistry·2025
Same author

Nitroarene Photoactivation Promotes Oxidative Deconstruction of Olefinic Polymers.

ACS macro letters·2025
Same author

Snapshot of cyclooctyne ring-opening to a tethered alkylidene cyclic polymer catalyst.

Chemical science·2024
Same author

Heparin-Bead Extraction Enhanced Fluorogenic Aptamer-Thrombin Composite Reporter Enables Sensitive and Rapid Detection of Functional Antithrombin.

ACS sensors·2024
Same author

Tethered Alkylidenes for REMP from Carbon Disulfide Cleavage.

Inorganic chemistry·2024
Same author

Soliton Based Dynamic Nuclear Polarization: An Overhauser Effect in Cyclic Polyacetylene at High Field and Room Temperature.

The journal of physical chemistry letters·2024
Same journal

From cyclic diaryl λ<sup>3</sup>-bromanes/chloranes to polyfuntionalized biarylsilanes <i>via</i> aryne σ-bonds.

Chemical science·2026
Same journal

Non-equilibrium formation of the elusive dibridged diboranyl (B<sub>2</sub>H<sub>5</sub>) radical and boranes in low-temperature diborane ices.

Chemical science·2026
Same journal

Visible-light-driven ruthenium-catalyzed hydrogenation of manganese nitride complexes to ammonia under ambient conditions.

Chemical science·2026
Same journal

Quantification of mesopore infiltration in a polymer-grafted metal-organic framework.

Chemical science·2026
Same journal

Enhanced and selective oxygen reduction by iron porphyrin with a biguanide residue in the second coordination sphere.

Chemical science·2026
Same journal

Excited-state orbital angular momentum enables all-optical molecular spin coherence.

Chemical science·2026
See all related articles
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 Experiment Video

Updated: Jun 11, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

7.8K

Cyclic polymers from alkynes: a review.

Parker T Boeck1,2, Adam S Veige1,2

  • 1George & Josephine Butler Polymer Research Laboratory, Center for Macromolecular Sciences & Engineering, Department of Chemistry, University of Florida P.O. Box 117200 Gainesville FL 32611 USA.

Chemical Science
|September 30, 2024
PubMed
Summary
This summary is machine-generated.

This review covers cyclic polymers made from alkynes, detailing synthesis methods and applications in materials and electronics. It compares techniques and suggests future catalytic system developments for these versatile cyclic polymers.

More Related Videos

Constructing Cyclic Peptides Using an On-Tether Sulfonium Center
07:11

Constructing Cyclic Peptides Using an On-Tether Sulfonium Center

Published on: September 28, 2022

2.6K
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.2K

Related Experiment Videos

Last Updated: Jun 11, 2025

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

7.8K
Constructing Cyclic Peptides Using an On-Tether Sulfonium Center
07:11

Constructing Cyclic Peptides Using an On-Tether Sulfonium Center

Published on: September 28, 2022

2.6K
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
08:12

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers

Published on: December 16, 2022

3.2K

Area of Science:

  • Polymer Chemistry
  • Organic Synthesis
  • Materials Science

Background:

  • Cyclic polymers offer diverse applications in material science, biomedicine, and inorganic chemistry.
  • Alkynes are key monomers for synthesizing cyclic polymers with expanded uses in electronic materials and polyolefins.

Purpose of the Study:

  • To review recent advancements in synthesizing cyclic polymers from mono- and disubstituted alkynes.
  • To provide a comprehensive overview of synthetic methodologies and applications.
  • To facilitate comparative analysis of synthetic methods and identify future research opportunities.

Main Methods:

  • Review of literature on cyclic polymer synthesis from alkyne monomers.
  • Analysis of synthetic methodologies including those for mono- and disubstituted alkynes.
  • Comparative assessment of existing synthetic routes and their limitations.

Main Results:

  • Recent progress in synthesizing cyclic polymers from various alkyne monomers is highlighted.
  • Established synthetic routes and their associated applications are detailed.
  • Advantages and limitations of different synthetic approaches are comparatively analyzed.

Conclusions:

  • Cyclic polymers from alkynes are crucial for advanced materials and polyolefins.
  • Further development of novel catalytic systems is needed for efficient synthesis.
  • This review provides a foundation for future research in alkyne-derived cyclic polymers.