作者:Gemma L. Turner、James A. Morris、Michael F. Greaney
DOI:10.1002/anie.200702141
日期:2007.10.22
Palladium-Catalyzed C−H Functionalization of Heteroarenes with Aryl Bromides and Chlorides
作者:Shunsuke Tamba、Youhei Okubo、Shota Tanaka、Daiki Monguchi、Atsunori Mori
DOI:10.1021/jo101433g
日期:2010.10.15
Palladrum-catalyzed C-H arylation of election-enriched heteroarenes with aryl bromides and aryl chlorides proceeds in the presence of LiO-i-Bu as a base The reaction allows one-pot synthesis of differently substituted 2.5-diarylthiazole with the same catalyst system by switching the solvent and the amount of base
Facile Synthesis of 2,5-Diarylthiazoles via Palladium-Catalyzed Tandem C−H Substitutions. Design of Tunable Light Emission and Liquid Crystalline Characteristics
A mild and regioselective C-H substitution reaction of thiazole by the catalysis of the palladium/copper system is found to proceed in the presence of tetrabutylammonium fluoride under mild conditions. Applying the new reaction, we synthesized various 2,5-diarylthiazoles that exhibit light-emitting and liquid crystalline characteristics in good yields. The color of light emission is tunable by the introduction of the substituent. Differently substituted 2,5-diarylthiazoles are found to exhibit a stable liquid crystal phase in a wide temperature range.