题目内容

Which of the following is least likely to be found in the product mixture which results when 2-iodopentane reacts with sodium ethoxide in ethanol?()

A. 1-ethoxypentane
B. 2-ethoxypentane
C. Z-2-pentene
D. E-2-pentene
E. 1-pentene

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What product results from the SN2 reaction between R-2-chloropentane and hydroxide?()

A. R-2-pentanol
B. S-2-pentanol
C. racemic pentanol
D. 1-pentanol
E. 3-pentanol

The specific rotation of optically pure R-sec-butyl alcohol is -13.52°. An optically pure sample of R-sec-butyl bromide was converted into the corresponding sec-butyl alcohol via an SN2 reaction. What is the specific rotation of the product, assuming 100% yield?()

A. -13.52°
B. between 0° and -13.52°
C. between 0° and +13.52°
D. +13.52°
E. zero

Identify the alkyl halide that reacts the fastest in an SN2 reaction.()

A. 2-chloro-2-methylpropane
B. 2-chlorobutane
C. 1-chlorobutane
D. chloromethane

Identify the best nucleophile in an SN2 reaction.()

A. isopropoxide ion
B. tert-butoxide ion
C. ethoxide ion
D. tert-pentoxide ion