Palladium-Catalyzed Regioselective Aromatic Extension of Internal Alkynes through a Norbornene-Controlled Reaction Sequence
作者:Qingyang Zhao、Wai Chung Fu、Fuk Yee Kwong
DOI:10.1002/anie.201713207
日期:2018.3.19
A regioselective aromatic π‐extension reaction of internal alkynes is reported. The proposed method employs three easily available components, namely aryl halides, 2‐haloarylcarboxylic acids, and disubstituted acetylenes. The transformation is driven by a controlled reaction sequence of C−H activation, decarboxylation, and annulation to give poly(hetero)aromatic compounds in a site‐selective fashion
报道了内部炔的区域选择性芳族π-延伸反应。所提出的方法采用了三种容易获得的组分,即芳基卤化物,2-卤代芳基羧酸和二取代的乙炔。转化是由受控的CH活化,脱羧和环化反应序列驱动的,从而以定点选择性的方式生成聚(杂)芳族化合物。与先前报道的钯催化三组分环化反应不同,炔烃碳钯反应是该串联反应的最后一步。