题目内容

Which of the following is the strongest acid?()

A. CH3NH2
B. CH3OH
CH3SH
D. CH3OCH3
E. CH3Cl

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Which of the following is the best method for preparing CH3Br?()

A. CH3OH + Br-
B. CH3OH + HBr
CH3OH + Br2
D. CH3OH + NaBr
E. CH3OH + Br+

When dipentyl ether is treated with excess HI, through what type of mechanisms does the major product result?()

A. SN2
B. SN1
C. both SN1 and SN2
D. E1
E2

CH3CH2Br + -OH → ?Assuming no other changes, what is the effect of doubling only the concentration of the alkyl halide in the above SN2 reaction?

A. no change
B. doubles the rate
C. triples the rate
D. quadruples the rate
E. rate is halved

What is the major product which results when (2R,3S)-2-chloro-3-phenylbutane is treated with sodium methoxide in methanol?()提示：这道题考察的是大家对于E2消除中，反式共平面的认识。反式共平面要求再纽曼投影式中，氢和离去基团（Cl）必须处于反式共平面。

A. 2-phenyl-1-butene
B. Z-2-phenyl-2-butene
C. S-3-phenyl-1-butene
D. R-3-phenyl-1-butene
E. R-2-methoxy-2-phenylbutane