C-H Arylation of <i>N</i>
-Heteroarenes under Metal-Free Conditions and its Application towards the Synthesis of Pentabromo- and Pentachloropseudilins
作者:Mukesh Kumar、Shweta Sharma、Parijat Sil、Manoj Kushwaha、Satyajit Mayor、Ram A. Vishwakarma、Parvinder Pal Singh
DOI:10.1002/ejoc.201900353
日期:2019.6.16
Herein, we have developed a metal‐free and mild condition for the synthesis of 2‐arylated heteroarenes. The complex forming property and charge transfer property of phenothiazine expanded its application towards catalysis The optimized condition has been successfully employed for the synthesis important marine natural product namely pentabromo/chloropseudilins (PBP/PCP). The synthesized Pentachloropseudilin
A facile three‐step synthesis of 2‐(2‐aminophenyl)pyrrole (1) and 2‐[(2‐aminomethyl)phenyl]pyrrole (2) is reported by use of Suzuki coupling of N‐Boc‐pyrrol‐2‐yl boronic acid (3) and o‐substituted aryl halogenides, followed by hydrogenation. The Pd‐catalyzed cross‐coupling reaction is optimized to be applicable to a wide range of substitued aryl halogenides, with electron‐donating and electron‐withdrawing
据报道,通过N -Boc-吡咯-2-基的Suzuki偶联,可以轻松实现三步合成2-(2-氨基苯基)吡咯(1)和2-[((2-氨基甲基)苯基]吡咯(2)。硼酸(3)和邻位取代的芳基卤化物,然后氢化。对Pd催化的交叉偶联反应进行了优化,以适用于具有电子给体和吸电子取代基5a,5b,5c,5d,5e,5f,5g的广泛取代的芳基卤化物。此外,邻溴代苯胺和3的Pd催化偶联可用于吡咯并[1,2 - c ]喹唑啉-5(6 H)-一(8)的一步制备。J.杂环化学。(2011)。