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Issue 31, 2015
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Palladium-catalyzed direct C–H arylations of dioxythiophenes bearing reactive functional groups: a step-economical approach for functional π-conjugated oligoarenes

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Abstract

A Pd-catalyzed single-step C–H arylation of dioxythiophene derivatives bearing unprotected reactive functional groups (–OH, –COOH, –N3) in a phosphine-free manner has been developed. Various dioxythiopene-based oligoarenes with extended π-conjugation are obtained with good yields (up to 90%). These oligoarenes display suitable optical properties (absorption and emission maxima, quantum yields) and contain reactive functional groups suitable for further conjugations with bioactive molecules. This new methodology is step economical (fewer synthetic steps) and environmentally friendly (no toxic metal-containing by-products) and the oligoarenes synthesized are potentially applicable for bio-labeling, bioimaging, and biosensing.

Graphical abstract: Palladium-catalyzed direct C–H arylations of dioxythiophenes bearing reactive functional groups: a step-economical approach for functional π-conjugated oligoarenes

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Article information


Submitted
08 Apr 2015
Accepted
25 Jun 2015
First published
25 Jun 2015

Org. Biomol. Chem., 2015,13, 8505-8511
Article type
Paper
Author version available

Palladium-catalyzed direct C–H arylations of dioxythiophenes bearing reactive functional groups: a step-economical approach for functional π-conjugated oligoarenes

C. Liu, H. Chong, H. Lin, Y. Yamashita, B. Zhang, K. Huang, D. Hashizume and H. Yu, Org. Biomol. Chem., 2015, 13, 8505
DOI: 10.1039/C5OB00705D

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