Related Experiment Video
Updated: Jun 13, 2026

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Published on: November 9, 2019
Cross-coupling/cyclization reactions of two different allenic moieties
Benito Alcaide1, Pedro Almendros, Teresa Martínez del Campo
1Grupo de Lactamas y Heterociclos Bioactivos, Departamento de Química Orgánica I, Facultad de Química, Unidad Asociada al CSIC, Universidad Complutense de Madrid, Facultad de Química, 28040-Madrid, Spain. alcaideb@quim.ucm.es
Palladium-catalyzed reactions efficiently create heterocyclic structures from two different allene building blocks. This versatile method enables complex molecule synthesis for medicinal chemistry applications.
Area of Science:
- Organic chemistry
- Catalysis
- Medicinal chemistry
Background:
- Allene moieties are versatile synthons in organic synthesis.
- Allene cross-coupling cyclization reactions offer efficient routes to heterocycles.
Purpose of the Study:
- To explore palladium-catalyzed reactions involving two distinct allene derivatives.
- To develop novel cross-coupling heterocyclization processes.
Main Methods:
- Utilizing palladium catalysis for the union of two different allene moieties.
- Employing intramolecular cyclometalation for cyclization.
Main Results:
- Demonstration of versatile and highly effective new transformations.
- Synthesis of complex, potentially privileged heterocyclic structures.
Conclusions:
- Palladium-catalyzed allene coupling provides a powerful strategy for constructing heterocyclic scaffolds.
- The developed methods hold promise for applications in medicinal chemistry due to the accessibility of privileged structures.
Related Concept Videos
Cycloaddition Reactions: MO Requirements for Thermal Activation
Cycloaddition Reactions: Overview
Alkenes via Reductive Coupling of Aldehydes or Ketones: McMurry Reaction
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
Crossed Aldol Reactions: Overview
Cyclohexenones via Michael Addition and Aldol Condensation: The Robinson Annulation

