A.CH3CH2BrCH2BrCH2Br
B.CH3CH2BrCH2BrCH2Br
C.CH3CH2BrCH2=CH2
CH2BrCH3
CH2BrCH2Br
D.CH3CH2BrCH2=CH2
CH2BrCH2Br
A.CH3CH2BrCH2BrCH2Br
B.CH3CH2BrCH2BrCH2Br
C.CH3CH2BrCH2=CH2
CH2BrCH3
CH2BrCH2Br
D.CH3CH2BrCH2=CH2
CH2BrCH2Br
解析:有机物的制备方案设计要求实验步骤简洁,且尽可能无副反应发生,所以选择D项。
答案:D