Question: Stille coupling has been extended to include the coupling between sp- and sp 2-hybridized carbon atoms, when an alkynyl stannane ( R SnBuy ) is

Stille coupling has been extended to include the coupling between sp- and sp 2-hybridized carbon atoms, when an alkynyl stannane ( R SnBuy ) is used. Draw the coupling product that is expected when para-nitrobromobenzene is treated with the following alkynyl stannane in the presence of Pd(PPh)4

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