試題詳解

11. What compound is produced when (CH₃)₂CHCH₂Br is subjected to the following sequence of steps: 1. Mg, Et₂O, 2. CO₂, 3. H₃O⁺ ?
(A) 2-methylpropanoic acid
(B) 3-methylpropanoic acid
(C) 2-methylbutanoic acid
(D) 3-methylbutanoic acid
(E) 2-methylhexanoic acid