試題詳解

44. The conversion of butanoic acid to 2-pentanone is best accomplished with
(A) 1. thionyl chloride; 2. methyl magnesium bromide
(B) 1. methyllithium; 2. H₃O⁺
(C) 1. CH₃OH, H₂SO₄; 2. methyllithium
(D) 1. thionyl chloride; 2. methanol

(E) 1. diazomethane; 2. H₃O⁺