Question Detail

CHM 102 Alkynes: Structure, Bonding, and Nomenclature Objective Question
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Question

What product is formed when ethylmagnesium bromide (CH₃CH₂MgBr) reacts with propyne?
Options
A No reaction
B Methane + CH₃CH₂C≡CMgBr
C Ethane + CH₃C≡CMgBr
Correct Answer
D 1‑Butyne
Correct Answer

Option C is the correct answer.

Detailed Explanation

Grignards are strong bases; they deprotonate terminal alkynes to give the acetylide magnesium salt and release the corresponding alkane (ethane from ethyl Grignard).

Hint

Terminal alkyne H is acidic enough for RMgX.

Question Info

Course: CHM 102
Topic: Alkynes: Structure, Bonding, and Nomenclature
Type: Objective
Difficulty: Not specified
Question 571 of 1999
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