Unsymmetric Diazaborepin Framework with Fused 6/5/7 Ring and π-Extension to Two Bis-Diazaborepin-Embedded Isomers

Organic Letters 2026

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Authors: Lingjuan Chen, Jiaqi Dong, Shan Gao, Yirong Yuan, Junwei Wang, Deng-Tao Yang
DOI: 10.1021/acs.orglett.5c05129
Cited by: 1
References: 39

Abstract

An unsymmetric diazaborepin framework NBNH was synthesized, featuring a fused 6/5/7-ring core. Further π-extension via meta - and para -N−π–N arrangements afforded two bis-diazaborepin-embedded isomers m -dNBNH and p -dNBNH . The two isomers display distinct frontier molecular orbital distributions, and the para isomer p -dNBNH exhibits a photoluminescence quantum yield of 100%. All three compounds exhibit singlet-oxygen sensitization and pronounced antiaromatic character for the diazaborepin units.

Fields of Study & Subjects

Organoboron and organosilicon chemistry Synthesis and Properties of Aromatic Compounds Luminescence and Fluorescent Materials

Publication details

Journal / source
Organic Letters
Publisher
American Chemical Society (ACS)
Volume
28
Issue
4
Pages
1289–1294
Publication date
14 January 2026
Language
EN