試題詳解

24. Malonic ester (diethyl malonate) is treated successively with sodium ethoxide (1 eq.), ethyl bromide, potassium tert-butoxide, isobutyI chloride, hot aqueous NaOH, HCI, and heat. What is the final product?
(A) 4-Ethyl-2-methylpentanoic acid
(B) 6-Methylheptanoic acid
(C) 2-Ethyl-3-methylpentanoic acid
(D) 2-Ethyl-4-methylpentanoic acid
(E) EthylisobutyImalonic acid