Multicomponent Coupling Reaction Using Arynes: Synthesis of Xanthene Derivatives
Eito Yoshioka1, Masatoshi Nishimura1, Takashi Nakazawa1
1School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan.
A novel one-pot synthesis creates diverse xanthene derivatives using a cascade reaction. This method efficiently couples arynes, DMF, and active methylenes, followed by thiol addition for structural variety.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Xanthene derivatives are important heterocyclic compounds with diverse applications.
- Efficient synthetic routes for complex organic molecules are highly sought after.
Purpose of the Study:
- To develop a novel one-pot synthetic strategy for xanthene derivatives.
- To explore the reactivity of intermediates and expand structural diversity.
Main Methods:
- Cascade three-component coupling reaction involving arynes, DMF, and active methylenes.
- Subsequent SN2' reaction with thiols to form the final products.
Main Results:
- Successful one-pot synthesis of various xanthene derivatives.
- Demonstrated reactivity of coupling products with nucleophiles.
- Facile incorporation of structural variety into oxygen heterocycles.
Conclusions:
- The developed method provides an efficient route to structurally diverse xanthene derivatives.
- The study highlights the versatility of the synthetic intermediates for further functionalization.
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