70. Which of these is NOT a useful method for the synthesis of 1,3-pentadiene?
(A) 1,4-pentanediol + H2SO4 at 180o
C
(B) 2,4-dibromopentane + (CH3)3COK , (CH3)3COH at 75o
C
(C) 2,4-pentanediol + H2SO4 at 180o
C
(D) HC=CCH=CHCH3 + H2, Ni2B (P-2)
(E) 1,4-dibromopentane + CH3CH2ONa , CH3CH2OH at 75o
C
詳解 (共 1 筆)
未解鎖
答案: B ㅤㅤ 這不是合成 1,3-...
私人筆記 (共 2 筆)
未解鎖
烯類的製備 1. halides→al...