InBr<sub>3</sub>: A Versatile Catalyst for the Different Types of Friedel−Crafts Reactions
作者:Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1021/jo9014613
日期:2009.10.16
Mild and efficient InBr3-catalyzed Friedel−Crafts alkylation of heteroaromatic or electron-rich aromatic compounds with α-amido sulfones at room temperature in CH2Cl2 has been developed. The products undergo further Friedel−Crafts alkylation with heteroaromatic or electron-rich aromatic compounds leading to unsymmetrical or bis-symmetrical triaryl methanes in good yield. α-Amido sulfones are employed
Amberlyst-15: an efficient and reusable catalyst for the Friedel–Crafts reactions of activated arenes and heteroarenes with α-amido sulfones
作者:Santosh T. Kadam、Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1016/j.tet.2009.10.044
日期:2009.12
The heterogeneous Amberlyst-15 catalyst displays efficient catalytic properties for the Friedel–Crafts reactions between an activatedarenes or heteroarenes and α-amido sulfones. Various α-amido sulfones on treatment with 1,2,4-trimethoxy benzene give the Friedel–Crafts reaction products in very good yield. The reactions with heteroarenes show moderate yield of the product. The catalyst can be easily