Question

All reagents, $\left[Cu\right(N{H}_3{)}_2{]}^{\oplus },\left[Ag\right(N{H}_3{)}_2{]}^{\oplus },C{H}_{3}MgBr$ and $NaN{H}_2$ react with :

• A. cyclooctyne
• B. pent-1-yne
• C. pent-2-yne
• D. ethyne

Answer 1

Answer: (B), (D)

ethyne
pent-1-yne

All reagents, $\left[Cu\right(N{H}_3{)}_2{]}^{\oplus },\left[Ag\right(N{H}_3{)}_2{]}^{\oplus },C{H}_{3}MgBr$ and $NaN{H}_2$ react with terminal alkynes

So Pent-1-yne and Ethyne reacts with these reagents.

Hence options B & D are correct.