Arylindium reagents,

The synthesis of biaryls using aryltitanium and arylindium reagents are under extensive investigations which will obviously be a significant contribution to the aryl-aryl bond forming methodology. 

A novel rhodium-catalysed conjugate addition of indium reagents to electron-deficient olefins has been reported. " The reaction takes place in THF/MeOH at 110 C using arylindium dichlorides, a rhodium(I)-BINAP complex as catalyst, and a,/ -unsaturated ketones and lactones in good yields. The addition of methanol was found crucial for an efficient transformation, and NMR studies indicating that methanol promotes the catalytic cycle leaving the indium organometallic unaltered. 

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