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Noncatalytic [2+2] Cycloaddition Providing Donor-Acceptor Type 2-Azetines Featuring the 2-Aminophenyl Groups

Masaya Morisaki1, Rikutaro Abe1, Shigekazu Ito1

  • 1Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Institute of Science Tokyo (Science Tokyo), Meguro-ku, Tokyo, Japan.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 2, 2026
PubMed
Summary

Electron-rich alkynes undergo catalyzed [2+2] cycloaddition to form fluorescent 2-azetines without a catalyst. These novel N-heterocycles exhibit blue fluorescence, crucial for developing new photo-functional materials.

Keywords:
cycloadditionsdonor‐acceptor moleculesfluorescencenitrogen heterocyclespyramidal amino groups

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