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Updated: Jun 7, 2025

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of PhosphorusI
Published on: November 22, 2016
N-Directed Two-Fold Bromoboration of Diynes Enables Access to Brominated BN-Embedded PAHs
Xiaoran Feng1, Zhaobo Liu1, Qing-Yun Ni1
1Ningbo Key Laboratory of Biomedical Imaging Probe Materials and Technology, Laboratory of Advanced Theranostic Materials and Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.
Abstract:
N-directed 2-fold bromoboration reactions of diynes with BBr3 have been developed, allowing the access to novel internally BN-doped polycyclic aromatic hydrocarbons from readily available precursors under mild conditions. Computational investigations identified three potential reaction mechanisms, each involving either BBr3 or [BBr4]-, with low activation barriers (ΔG < 16 kcal/mol) for all pathways. The resulting brominated products can be further functionalized through various cross-coupling protocols, enabling the synthesis of highly luminescent emitters with quantum yield exceeding 90.
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