Preparation, structure, reactivity, Lewis acidic and fluorescence properties of arylpyridine based boron C,N‐chelates featuring weakly coordinating anions. DOI
Karel Škoch,

Michaela Buziková,

Drahomı́r Hnyk

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract Herein, we present the preparation of a series electronically and/or sterically distinct borenium‐type species based on simple 2‐arylpyridine scaffold. Corresponding arylpyridine was firstly subjected to electrophilic borylation (BBr 3 / i‐ Pr 2 NEt) and formed BBr chelate reduced with LiAlH 4 yield boron dihydride. Elimination one hydride led Lewis acidic borenium‐like products. Four methods elimination were evaluated influence counterions reactivity, luminescent properties assessed both experimentally computationally. Arylpyridine chelates featuring weakly coordinating exhibit fluorescent upon UV irradiation. Several general trends inferred modulate emission wavelength fluorescence quantum yield. Based our observations, have devised prepared fluorophores yellow‐green yields up 93 %.

Language: Английский

Preparation, structure, reactivity, Lewis acidic and fluorescence properties of arylpyridine based boron C,N‐chelates featuring weakly coordinating anions. DOI
Karel Škoch,

Michaela Buziková,

Drahomı́r Hnyk

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 7, 2024

Abstract Herein, we present the preparation of a series electronically and/or sterically distinct borenium‐type species based on simple 2‐arylpyridine scaffold. Corresponding arylpyridine was firstly subjected to electrophilic borylation (BBr 3 / i‐ Pr 2 NEt) and formed BBr chelate reduced with LiAlH 4 yield boron dihydride. Elimination one hydride led Lewis acidic borenium‐like products. Four methods elimination were evaluated influence counterions reactivity, luminescent properties assessed both experimentally computationally. Arylpyridine chelates featuring weakly coordinating exhibit fluorescent upon UV irradiation. Several general trends inferred modulate emission wavelength fluorescence quantum yield. Based our observations, have devised prepared fluorophores yellow‐green yields up 93 %.

Language: Английский

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