An Unexpected C–C Bond Cleavage of Acetophenones: Synthesis of Bis(heteroaryl)arylmethanes and Triarylmethanes via SeO2/Lanthanide Chloride Catalyzed Friedel–Crafts Arylation
作者:H. Meshram、G. Kumar、A. Kumar、A. Swetha、B. Babu
DOI:10.1055/s-0035-1560808
日期:——
A novel synthesis of bisheteroarylaryl methanes and triarylmethanes is described by the selective C–C bond cleavage of acetophenones in the presence of SeO2/lanthanide chlorides. The present strategy provides an in situ generation of aldehydes from acetophenones followed by a double Friedel–Crafts reaction of electron-rich arenes. Natural product 1,1,1-tris(3-indolyl)methane is synthesized in a single
通过在 SeO2/镧系元素氯化物存在下苯乙酮的选择性 C-C 键断裂描述了双杂芳基芳基甲烷和三芳基甲烷的新合成。本策略提供了从苯乙酮原位生成醛,然后是富电子芳烃的双弗里德尔-克拉夫茨反应。天然产物 1,1,1-三(3-吲哚基)甲烷是按照相同的协议一步合成的。