Which of the following reagents can be used to reduce acetic acid to ethyl alcohol?()
A. 1. LiAlH4 2. H3O+
B. 1. NaBH4 2. H3O+
C. H2/Pt
D. NH2NH2, NaOH
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What is the major product when (CH3)2CHCH2CH2Br is subjected to the following reaction sequence()Mg, etherCO2 H3O+
A. 3-methyl-1-butanol
B. 2-methyl-2-butanol
C. 4-methyl-1-pentanol
D. 4-methylpentanoic acid
What class of organic compounds results when cyclopentanone reacts with ethylamine in the presence of trace acid?()
A. cyanohydrin
B. semicarbazone
C. imine
D. enamine
E. oxime
Which of the following most typically characterizes the reactions of aldehydes and ketones?()
A. electrophilic addition
B. electrophilic substitution
C. nucleophilic acyl substitution
D. nucleophilic addition
E. radical addition
Why do aldehydes undergo nucleophilic addition reactions while esters undergo nucleophilic acyl substitution reactions?()
A. The carbonyl carbon of an ester is more electrophilic than that of an aldehyde.
B. Aldehydes are more sterically hindered than esters.
C. Once the nucleophile adds to an aldehyde, the tetrahedral intermediate is too sterically hindered to eliminate one of the attached groups.
D. The ester carbonyl carbon is sp3 hybridized while the aldehyde carbonyl carbon is sp2 hybridized.
E. Once the nucleophile adds to an aldehyde, neither H- nor R- can be eliminated because they are poor leaving groups.
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