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Updated: Jun 21, 2025

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
Published on: January 19, 2016
Transition Metal-Free Domino Hydroamination/Isomerization/Transamidation Sequence: An Entry to Trifluorinated
Dorian Schutz1, Clément Gommenginger1, Baptiste Moegle1
1Equipe Synthèse Organique et Phytochimie, Institut de Chimie, CNRS-UdS, UMR 7177, 4 rue Blaise Pascal, CS 90032, 67081 Strasbourg, France.
A novel method synthesizes trifluorinated-5-methylenepyrrolidinone using ynamides and aldehydes. This process involves a two-carbon homologation followed by a metal-free domino reaction for stereoselective construction.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
- Fluorine Chemistry
Background:
- Trifluorinated compounds are crucial in pharmaceuticals and materials science.
- Efficient synthesis of complex fluorinated heterocycles remains a challenge.
Purpose of the Study:
- To develop a novel, efficient, and stereoselective method for constructing trifluorinated-5-methylenepyrrolidinone.
- To explore a metal-free domino reaction sequence for accessing valuable fluorinated scaffolds.
Main Methods:
- Acid-catalyzed two-carbon homologation of ynamides and aldehydes to form CF3-substituted dienes.
- Subsequent metal-free domino hydroamination/isomerization/transamidation sequence.
Main Results:
- Successful construction of trifluorinated-5-methylenepyrrolidinone.
- High stereoselectivity achieved in the domino reaction sequence.
- Demonstration of a versatile synthetic strategy for fluorinated heterocycles.
Conclusions:
- The reported method provides a powerful new route to trifluorinated-5-methylenepyrrolidinone.
- The metal-free domino sequence offers an attractive and sustainable approach for synthesizing complex fluorinated molecules.
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