Related Experiment Video
Updated: May 28, 2026

Facile Preparation of (2Z,4E)-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
Published on: June 21, 2017
Efficient and continuous monoacylation with superior selectivity of symmetrical diamines in microreactors
Ram Awatar Maurya1, Phan Huy Hoang, Dong-Pyo Kim
1National Creative Research Centre of Applied Microfluidic Chemistry, Chungnam National University, Daejeon, 305-764, South Korea.
Continuous microreactor synthesis enables selective monoacylation of symmetrical diamines, achieving high yields of the kinetically controlled product without special catalysts or elevated temperatures.
Area of Science:
- Organic Chemistry
- Chemical Engineering
- Process Chemistry
Background:
- Symmetrical diamines are important building blocks in organic synthesis.
- Achieving selective monoacylation of symmetrical diamines is challenging due to statistical product distribution.
- Traditional methods often require specific catalysts or harsh conditions.
Purpose of the Study:
- To develop an efficient and continuous method for the selective monoacylation of symmetrical diamines.
- To investigate the use of microreactors for improved reaction control and selectivity.
- To achieve high yields of the kinetically controlled product under mild conditions.
Main Methods:
- Utilizing microreactor technology for continuous flow synthesis.
- Performing monoacylation reactions of symmetrical diamines.
- Analyzing reaction products for selectivity and yield.
Main Results:
- Continuous monoacylation in microreactors demonstrated superior selectivity compared to statistical predictions.
- High yields of the kinetically controlled monoacylated product were obtained.
- The reaction proceeded efficiently without the need for specialized catalysts at ambient temperature.
Conclusions:
- Microreactor technology offers a powerful platform for achieving high selectivity in diamine monoacylation.
- This method provides a valuable, catalyst-free, and ambient temperature route to kinetically controlled products.
- The findings present an efficient and scalable approach for synthesizing selectively monoacylated diamines.
Related Concept Videos
Alkylation of β-Diester Enolates: Malonic Ester Synthesis
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Preparation of Amines: Reductive Amination of Aldehydes and Ketones
Preparation of 1° Amines: Azide Synthesis
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Preparation of 1° Amines: Gabriel Synthesis
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...

