题目内容

Typically, amides will hydrolyze under ________ conditions than esters.()

A. milder
B. more dilute
C. more vigorous
D. less vigorous
E. more saline

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Esters and amides are most easily made by nucleophilic acyl substitution reactions on ________.()

A. alcohols
B. acid anhydrides
C. carboxylates
D. carboxylic acids
E. acid chlorides

Which of the following is/are formed in the reaction between ethyl butanoate and ethyl amine? ()

A. ethanol
B. 1-butanol
C. N-ethylbutanamide
D. both A and C
E. both B and C

Which of the following esters undergoes hydrolysis in base most easily?()

A. CH3CH2CO2CH3
B. (CH3)2CHCH2CO2CH3
C6H5O2CCH3
D. p-CH3C6H4O2CCH3
E. p-NO2C6H4O2CCH3

Which of the following intermediates is present in the acid-catalyzed hydrolysis of t-butylacetate but not in the acid-catalyzed hydrolysis of methyl acetate?()

A. a protonated carbonyl
B. a carbocation
C. a carbanion
D. a carboxylate anion
E. 1-propanol