Trimethylsilylacetylene → HCID 12579657, compound

Participants

Reaction Steps

In a flask having its atmosphere completely displaced with nitrogen were charged 19 g of 4,4'-diiodobiphenyl, 1.31 g of bis(triphenylphosphine)palladium dichloride, 0.094 g of cuprous iodide and 500 ml of diethylamine. The temperature was elevated to 30° C. under stirring, and 11.04 g of trimethylsilylacetylene was added to the mixture, followed by allowing the mixture to react for 4.5 hours to obtain 4,4'-di(trimethylsilylethynyl)biphenyl. Hydrolysis of this product yielded 4,4'-diethynylbiphenyl.

Provenance & Evidence