Unprecedented Access to β-Arylated Selenophenes through Palladium-Catalysed Direct Arylation
作者:Aymen Skhiri、Ridha Ben Salem、Jean-François Soulé、Henri Doucet
DOI:10.1002/chem.201700202
日期:2017.2.24
reported methods allow access to α‐arylated selenophenes, whereas the synthesis of β‐arylated selenophenes remains very challenging. Here, the Pd‐catalysed coupling of benzenesulfonyl chlorides with selenophenes affording regiospecific β‐arylated selenophenes is reported. The reaction proceeds with easily accessible catalyst, base and substrates, and tolerates a variety of substituents both on the benzene
Palladium-Catalyzed Suzuki Cross-Coupling of 2-Haloselenophenes: Synthesis of 2-Arylselenophenes, 2,5-Diarylselenophenes, and 2-Arylselenophenyl Ketones
作者:Patrícia Prediger、Angélica V. Moro、Cristina W. Nogueira、Lucielli Savegnago、Paulo Henrique Menezes、João B. T. Rocha、Gilson Zeni
DOI:10.1021/jo0601056
日期:2006.5.1
We present herein our results on the Suzuki coupling reaction of 2-haloselenophenes with boronic acids catalyzed by palladium salt and describe a new route established to prepare 2-arylselenophenes and 2,5-diarylselenophenes in good yields. The reaction proceeded cleanly under mild conditions and was performed with aryl boronic acids bearing electron-withdrawing, electron-donating, and neutral substituents
我们在本文中介绍2-卤代硒基与硼酸经钯盐催化的铃木偶联反应的结果,并描述了建立以高收率制备2-芳基硒烯和2,5-二芳基硒烯的新途径。该反应在温和的条件下干净地进行,并在DME中存在Pd(OAc)2,K 2 CO 3 / H 2 O的情况下,用带有吸电子,给电子和中性取代基的芳基硼酸进行。另外,通过该方案,还通过羰基化方法从2-碘硒基苯和硼酸获得不对称的芳基酮。