Question

Show how you might synthesize the following compounds, using acetylene and any suitable alkyl halides as your starting materials. if the compound given cannot be synthesized by this method, explain why.

A. hex-1-yne
B. hex-1-yne
C. hex-3-yne
D. 4-methylhex-yne
E. 5-methylhex-2-yne
F. cyclodecyne

Answer 1

When acetylene react with alkyl halide it's will give acyclic compound. It will not give cyclic compound. But if you used alkyl-dihalide compound then it's will give cyclic compound

Hence cyclodecyne can't be synthesize by this method because you used only alkyl halide ( you not used Alkyl-dihalide)