Organic Chemistry, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780134074580
Author: Bruice, Paula Yurkanis
Publisher: PEARSON
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Question
Chapter 22.2, Problem 3P
Interpretation Introduction
Interpretation: The slow steps for the given acid catalyzed ester hydrolysis has to be predicted as specific-acid catalyzed or general-acid catalyzed.
Concept introduction:
Catalyst: Substance which helps in increasing the rate of a particular reaction without getting consumed in the reaction.
Acid Catalyst: A catalyst which helps in increasing the rate of a particular reaction by the donation of a proton. There are two types of catalysis:
- Specific-acid catalysis: Proton is completely transferred before the slow step to the reactant in a reaction
- General-acid catalysis: Proton is completely transferred during the slow step to the reactant in a reaction
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Students have asked these similar questions
The final products for the hydroxide-ion-promoted hydrolysis of an ester re the carboxylate ion and methanol instead of the carboxylic acid and methoxide ion. Why?
Complete the missing components of the products in the acid hydrolysis of methyl butanoate below. For the first product fill in the remaining part of the acid formula, and for the second fill in the remaining part of the alcohol formula.
Metylbutanoate+H2O--H+-COOH+COOH
Alcohols are acidic in nature. Therefore, a strong base can
abstract the acidic hydrogen atom of the alcohol in a process
known as deprotonation. The alcohol forms an alkoxide ion by
losing the proton attached to the oxygen atom of the hydroxyl (
-OH) group. The alkoxide formed can act as a base or a
nucleophile depending on the substrate and reaction conditions.
However, not all bases can abstract the acidic proton of alcohols
and not all alcohols easily lose the proton. Deprotonation
depends on the strength of the base and the acidity of the
alcohol. Strong bases, such as NaNH2, can easily abstract a
proton from almost all alcohols. Likewise, more acidic alcohols
lose a proton more easily.
Determine which of the following reactions would undergo deprotonation based on the strength of the base and the acidity of the alcohol.
Check all that apply.
► View Available Hint(s)
CH3CH,OH + NH3 →CH,CH,O-NH
CH3
CH3
H3C-C-H+NH3 → H3 C-C-H
OH
O-NH
CH3CH2OH + NaNH, → CH3CH,O-Na* + NH3
CHC12
Cl₂…
Chapter 22 Solutions
Organic Chemistry, Books a la Carte Edition (8th Edition)
Ch. 22.2 - Compare each of the mechanisms listed here with...Ch. 22.2 - Prob. 3PCh. 22.2 - Prob. 4PCh. 22.3 - a. Draw the mechanism for the following reaction...Ch. 22.5 - Prob. 7PCh. 22.5 - Propose a mechanism for the Co2+ catalyzed...Ch. 22.6 - Prob. 9PCh. 22.7 - Prob. 10PCh. 22.7 - Prob. 12PCh. 22.7 - Prob. 13P
Ch. 22.9 - Which of the following amino acid side chains can...Ch. 22.9 - Which of the following C-terminal peptide bonds is...Ch. 22.9 - Carboxypeptidase A has esterase activity as well...Ch. 22.10 - Arginine and lysine side chains fit into trypsins...Ch. 22.10 - Explain why serine proteases do not catalyze...Ch. 22.11 - If H2 18O is used in the hydrolysis reaction...Ch. 22.11 - Draw the pH-activity profile for an enzyme that...Ch. 22.12 - The pHactivity profile for glucose-6-phosphate...Ch. 22.12 - Prob. 23PCh. 22.13 - Draw the mechanism for the hydroxide ion-catalyzed...Ch. 22.13 - What advantage does the enzyme gain by forming an...Ch. 22.13 - Prob. 26PCh. 22.13 - Prob. 27PCh. 22.13 - Aldolase shows no activity if it is incubated with...Ch. 22 - Which of the following parameters would be...Ch. 22 - Prob. 29PCh. 22 - Prob. 30PCh. 22 - Prob. 31PCh. 22 - Indicate the type of catalysis that is occurring...Ch. 22 - The deuterium kinetic isotope effect (KH2O/KD2O)...Ch. 22 - Prob. 34PCh. 22 - Co2+ catalyzes the hydrolysis of the lactam shown...Ch. 22 - there are two kinds of aldolases. Class I...Ch. 22 - Prob. 37PCh. 22 - The hydrolysis of the ester shown here is...Ch. 22 - Prob. 39PCh. 22 - At pH = 12, the rate of hydrolysis of ester A is...Ch. 22 - 2-Acetoxycyclohexyl tosylate reacts with acetate...Ch. 22 - Proof that an imine was formed between aldolase...Ch. 22 - Prob. 43PCh. 22 - a. Explain why the alkyl halide shown here reacts...Ch. 22 - Triosephosphate isomerase (TIM) catalyzes the...
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