First slide

Alkynes

Question

Which of the following reactions which cannot give an alkyne?

Moderate

A
B
C
D

Solution

The equations are as follows

[Step 3]: 1,3–dibromopropane on reaction with Na metal gives cyclopropane but not alkyne .
${CaC}_{2} {+ H}_{2} O \to_{}^{} HC \equiv {CH + Ca(OH)}_{2}$

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