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Updated: Dec 16, 2025

Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
CF3-Containing para-Quinone Methides for Organic Synthesis
Michael Winter1, Roman Schütz1, Andreas Eitzinger1
1Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstraße 69, 4040 Linz, Austria.
Researchers explored trifluoromethyl-containing para-quinone methides (CF3-QMs) for organic synthesis. These CF3-QMs enable straightforward synthesis of molecules with a CF3-substituted benzylic stereogenic center.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Trifluoromethyl (CF3) groups are crucial in medicinal chemistry and materials science.
- Developing efficient methods for introducing CF3 groups is a key challenge in organic synthesis.
Purpose of the Study:
- To investigate a new family of CF3-containing para-quinone methides (CF3-QMs) for their synthetic utility.
- To explore the reactivity of CF3-QMs with various nucleophiles.
- To determine the electrophilicity of a prototypical CF3-QM.
Main Methods:
- Systematic investigation of CF3-QMs.
- Nucleophilic addition reactions.
- Determination of electrophilicity using the Mayr scale.
Main Results:
- A new class of CF3-QMs was synthesized and characterized.
- Diverse nucleophiles readily added to CF3-QMs.
- Target molecules featuring a benzylic CF3-containing stereogenic center were accessed.
- The electrophilicity parameter (E) of a prototypical CF3-QM was determined to be -11.68.
- This value indicates CF3-QMs are highly reactive electrophiles.
Conclusions:
- CF3-QMs are versatile building blocks in organic synthesis.
- They provide a straightforward route to valuable CF3-substituted compounds.
- The high reactivity of CF3-QMs opens new avenues for synthetic transformations.
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