Related Experiment Video
Updated: Jul 18, 2026
![Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-(phosphinetriyl)tripiperidine]}palladium Under Mild Reaction Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F51444.jpg&w=3840&q=50)
11:44
Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-(phosphinetriyl)tripiperidine]}palladium Under Mild Reaction Conditions
Published on: March 20, 2014
The Heck-Mizoroki cross-coupling reaction: a mechanistic perspective
Jonathan P Knowles1, Andrew Whiting
1Department of Chemistry, Durham University, Science Laboratories, South Road, Durham, UK.
Organic & Biomolecular Chemistry
|December 14, 2006
Summary
The Heck-Mizoroki cross-coupling reaction is a vital synthetic tool. Recent studies, both experimental and theoretical, are clarifying its palladium-catalyzed mechanism, offering a comprehensive overview.
Area of Science:
- Organic Chemistry
- Catalysis
- Reaction Mechanisms
Background:
- The Heck-Mizoroki reaction is a cornerstone of modern organic synthesis.
- Its broad applicability to diverse substrates is well-established.
- However, a deep mechanistic understanding remains elusive.
Purpose of the Study:
- To review and compare recent experimental and theoretical studies on the Heck-Mizoroki reaction mechanism.
- To provide an updated perspective on the palladium-mediated coupling process.
Main Methods:
- Literature review of experimental investigations.
- Analysis of theoretical computational studies.
- Comparative assessment of mechanistic proposals.
Main Results:
- Synthesis of recent findings on the reaction pathway.
- Identification of key intermediates and transition states.
- Discussion of factors influencing reactivity and selectivity.
Conclusions:
- The Heck-Mizoroki reaction mechanism is complex and multifaceted.
- Ongoing research continues to refine our understanding of this important transformation.
- A consolidated view of current mechanistic insights is presented.
Related Concept Videos
02:46E1 Reaction: Kinetics and Mechanism
Here, in contrast to the E2 reaction mechanism, we delve into the aspects of the E1 reaction mechanism, which has two steps: rate-limiting loss of the leaving group and abstraction of the beta hydrogen by a weak base. Typically, the experimental proof for the E1 mechanism is via kinetic studies or isotope studies. While the former demonstrates the first-order kinetics—the dependence of the reaction solely on substrate concentration—the latter proves the abstraction of hydrogen only in the...
01:04Crossed Aldol Reactions: Overview
Crossed aldol addition is the reaction between two different carbonyl compounds under acidic or basic conditions. Here, both the carbonyl compounds function as nucleophiles and electrophiles. As shown in Figure 1, such a reaction yields a mixture of products, two of which are formed via self-condensation, while the remaining two are formed via crossed-condensation. Without adjustment, the reaction's usefulness in organic chemistry is decreased.
03:06Reaction Mechanisms
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
01:29Reaction Mechanisms: Rate-limiting Step Approximation
The rate-determining step, or RDS, in a chemical reaction is the slowest step that determines the overall reaction rate. It is identified by using the observed rate law and typically involves approximation methods like the RDS approximation or the steady-state approximation.In the RDS approximation, also known as the rate-limiting-step or equilibrium approximation, the reaction mechanism consists of one or more reversible reactions near equilibrium, followed by a slower RDS, and then one or...
02:45E2 Reaction: Kinetics and Mechanism
SN2 substitutions and E2 eliminations of alkyl halides proceed via a concerted pathway. While the nucleophile attacks the alpha carbon in SN2 reactions, it functions as a strong base and abstracts a beta hydrogen in the E2 mechanism. The rate-limiting transition state in E2 elimination reactions is characterized by partially broken carbon–hydrogen and carbon–halogen bonds and a partially formed pi bond between the alpha and beta carbons. The beta hydrogen and halide are eliminated...
01:17Coupled Reactions
Cellular processes such as building and breaking down complex molecules occur through stepwise chemical reactions. Some of these chemical reactions are spontaneous and release energy, whereas others require energy to proceed. Cells often couple the energy-releasing reaction with the energy-requiring one to carry out important cell functions.
Energy in adenosine triphosphate or ATP molecules is easily accessible to do work. ATP powers the majority of energy-requiring cellular reactions. Cells...
Energy in adenosine triphosphate or ATP molecules is easily accessible to do work. ATP powers the majority of energy-requiring cellular reactions. Cells...