Sequential catalytic synthesis of rod-like conjugated poly-ynes

Article abstract of DOI:10.1016/0040-4020(96)00240-2

Several poly-ynes X-[C ≡ C-C₆H₄-](n)C ≡ C-Si(i)Pr₃ (X = H, SiMe₃) with controlled length (n = 1, 2, 3, 4) have been prepared from the easily accessible 4-trimethylsilylethynyl iodobenzene by using iterative and convergent methods based on both Pd/Cu catalysed C-C cross-coupling and selective desilylation reactions.