An Efficient Synthesis of<i>N</i>-(Hetero)arylcarbazoles: Palladium-Catalyzed Coupling Reaction between (Hetero)aryl Chlorides and<i>N</i>-Carbazolylmagnesium Chloride
作者:Yuji Nakayama、Naota Yokoyama、Hideki Nara、Tohru Kobayashi、Mitsuhiko Fujiwhara
DOI:10.1002/adsc.201500301
日期:2015.7.6
under mild conditions (110 °C) in a short period of time (15 min to 2 h) to give N‐(hetero)arylcarbazoles in high yields. The reactions of bromochlorobenzenes proceeded in favour of the bromo group to afford N‐(chlorophenyl)carbazoles in a highly selective manner. Functional materials for use in organic light‐emitting diodes, such as mCP, 26mcPy, CBP and TCB, were also obtained in high yields within 15 min
报道了一种用于合成N-(杂)芳基咔唑(一种对功能材料有用的化合物)的有效方法。各种(杂)芳基氯化物与氯化N-咔唑基氯化镁在烯丙基氯化钯(II)二聚体[[PdCl(烯丙基)] 2 }和二叔丁基( 2,2-二苯基-1-甲基环丙烷-1-基)膦(cBRIDP)在温和条件下(110°C)在短时间内(15分钟至2小时)以高收率得到N-(杂)芳基咔唑。进行溴氯苯的反应有利于溴基团生成N-(氯苯基)咔唑的选择性很高。通过(杂)芳基多卤化物的反应,还可以在15分钟内以高收率获得用于有机发光二极管的功能材料,例如mCP,26mcPy,CBP和TCB。还讨论了反应条件的优化和假定的反应催化周期。