Oxidative C–H Homocoupling of Push–Pull Benzothiazoles: An Atom-Economical Route to Highly Emissive Quadrupolar Arylamine-Functionalized 2,2?-Bibenzothiazoles with Enhanced Two-Photon Absorption
نویسندگان
چکیده
Copper(II)-catalyzed C-H/C-H coupling of dipolar 2-H-benzothiazoles end-capped with triphenylamine moieties affords highly fluorescent 2,2'-bibenzothiazoles quadrupolar (D-?-A-?-D) architecture displaying large two-photon absorption (TPA) cross sections (543-1252 GM) in the near-infrared region. The notably higher TPA performance as compared to ?-systems a widely used 2,2'-bipyridine core, along ease synthesis and chelating N^N ability, makes title biheteroaryl platform an attractive building block for scope functional dyes exploiting nonlinear optical phenomena.
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ژورنال
عنوان ژورنال: Organic Letters
سال: 2021
ISSN: ['1523-7060', '1523-7052']
DOI: https://doi.org/10.1021/acs.orglett.1c01861