PKG ORGANIC CHEMISTRY
5th Edition
ISBN: 9781259963667
Author: SMITH
Publisher: MCG
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Chapter 20, Problem 20.6P
Interpretation Introduction
Interpretation: The reason corresponding to the fact that
Concept introduction: In the Reduction reaction, the number of
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Describe how 3-methyl-1-phenyl-3-pentanol can be prepared from benzene. You can use any inorganic reagents and solvents, and any organic reagents provided they contain no more than two carbons.
Acetals are formed from the reaction of two alcohols with a carbonyl under acidic
conditions. Acetal formation is faster with 1,2-ethanediol than with two methanol
molecules.
Choose the factor that explains the difference in reaction rates.
A) The reaction with 1,2-ethanediol has a
lower AH (enthalpy) of reaction.
B) The reaction with 1,2-ethanediol has a
higher AH (enthalpy) of reaction.
C) The reaction with 1,2-ethanediol has a
more favorable entropy of reaction.
Ethyl butyrate, CH3CH2CH2CO2CH2CH3, is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. Its fragrance and taste are often associated with fresh orange juice, and thus it is most commonly used as orange flavoring.It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst (H+):
CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l)
a) Given 7.70 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100% yield?
b) A chemist ran the reaction and obtained 5.25 g of ethyl butyrate. What was the percent yield?
c) The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0% yield. How many grams would be produced from 7.70 g of butanoic acid and excess ethanol?
Chapter 20 Solutions
PKG ORGANIC CHEMISTRY
Ch. 20 - Prob. 20.1PCh. 20 - Which carbonyl groups in the anticancer drug taxol...Ch. 20 - Prob. 20.3PCh. 20 - Problem 20.4 What alcohol is formed when each...Ch. 20 - Problem 20.5 What aldehyde or ketone is needed to...Ch. 20 - Prob. 20.6PCh. 20 - Problem 20.7 Draw the products formed when is...Ch. 20 - Problem 20.8 Draw the products formed (including...Ch. 20 - Prob. 20.9PCh. 20 - Problem 20.10 Draw a stepwise mechanism for the...
Ch. 20 - Prob. 20.11PCh. 20 - Problem 20.12 Draw the products formed from ...Ch. 20 - Prob. 20.13PCh. 20 - Prob. 20.14PCh. 20 - Prob. 20.15PCh. 20 - Problem-20.16 Review the oxidation reactions using...Ch. 20 - Problem-20.17 Write the step(s) needed to convert ...Ch. 20 - Problem-20.18 Oct-1-yne reacts rapidly with ,...Ch. 20 - Prob. 20.19PCh. 20 - Prob. 20.20PCh. 20 - Problem 20.21 Draw the product of each reaction.
...Ch. 20 - Problem 20.22 Draw the products (including...Ch. 20 - Problem 20.23 What Grignard reagent and carbonyl...Ch. 20 - Problem 20.24 Linalool (the Chapter 9 opening...Ch. 20 - Problem 20.25 What Grignard reagent and carbonyl...Ch. 20 - Prob. 20.26PCh. 20 - Draw the products formed when each compound is...Ch. 20 - Problem 20.28 What ester and Grignard reagent are...Ch. 20 - Prob. 20.29PCh. 20 - Problem 20.30 What reagent is needed to convert ...Ch. 20 - Prob. 20.31PCh. 20 - What carboxylic acid formed from each alkyl halide...Ch. 20 - Prob. 20.33PCh. 20 - Problem 20.34 Draw the product when each compound...Ch. 20 - Problem 20.35 Synthesize each compound from...Ch. 20 - Prob. 20.36PCh. 20 - 20.37 Devise a synthesis of each alcohol from...Ch. 20 - 20.38 Draw the products formed when pentanal is...Ch. 20 - 20.39 Draw the product formed when is treated...Ch. 20 - The stereochemistry of the products of reduction...Ch. 20 - Prob. 20.41PCh. 20 - 20.42 Draw the products or each reduction...Ch. 20 - Prob. 20.43PCh. 20 - 20.44 Draw all stereoisomers formed in each...Ch. 20 - Prob. 20.45PCh. 20 - 20.46 Treatment of ketone A with ethynylithium...Ch. 20 - 20.47 Explain why metal hydride reduction gives an...Ch. 20 - Prob. 20.48PCh. 20 - 20.49 Identify the lettered compounds in the...Ch. 20 - Prob. 20.50PCh. 20 - 20.51 Draw a stepwise mechanism for the following...Ch. 20 - 20.52 Draw a stepwise mechanism for the following...Ch. 20 - Prob. 20.53PCh. 20 - 20.54 Draw a stepwise mechanism for the following...Ch. 20 - Prob. 20.55PCh. 20 - Prob. 20.56PCh. 20 - 20.57 What ester and Grignard reagent are needed...Ch. 20 - 20.58 What organolithium reagent and carbonyl...Ch. 20 - 20.59 What epoxide and organometallic reagent are...Ch. 20 - Prob. 20.60PCh. 20 - 20.61 Propose two different methods to synthesize...Ch. 20 - 20.62 Synthesize each compound from cyclohexanol...Ch. 20 - 20.63 Convert propan-2-ol into each compound....Ch. 20 - 20.64 Convert benzene into each compound. You may...Ch. 20 - 20.65 Design a synthesis of each compound from...Ch. 20 - 20.66 Synthesize each compound from the given...Ch. 20 - Prob. 20.67PCh. 20 - Prob. 20.68PCh. 20 - 20.69 An unknown compound A (molecular formula )...Ch. 20 - 20.70 Treatment of compound C (molecular formula )...Ch. 20 - 20.71 Treatment of compound E (molecular formula )...Ch. 20 - 20.72 Reaction of butanenitrile () with methyl...Ch. 20 - 20.73 Treatment of isobutene with forms a...Ch. 20 - 20.74 Draw a stepwise mechanism for the following...Ch. 20 - Prob. 20.75PCh. 20 - 20.76 Lithium tri-sec-butylborohydride, also known...Ch. 20 - Prob. 20.77PCh. 20 - Prob. 20.78PCh. 20 - Prob. 20.79PCh. 20 - 20.80 Draw a stepwise mechanism for the following...Ch. 20 - Prob. 20.81P
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- 17-60 1-Propanol can be prepared by the reduction of an aldehyde, but it cannot be prepared by the acid catalyzed hydration of an alkene. Explain why it cannot be prepared from an alkene.arrow_forwardEthyl butyrate, CH3CH2CH2CO2CH2CH3, is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. Its fragrance and taste are often associated with fresh orange juice, and thus it is most commonly used as orange flavoring.It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst (H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l). The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0% yield. How many grams would be produced from 8.50 gof butanoic acid and excess ethanol? Express your answer in grams to three significant figures.arrow_forwardEthyl butyrate, CH3CH2CH2CO2CH2CH3, is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. Its fragrance and taste are often associated with fresh orange juice, and thus it is most commonly used as orange flavoring.It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst (H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l) Given 8.50 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100%yield? Express your answer in grams to three significant figures.arrow_forward
- What is the reduction product of the following compound with H2/Pd? A 2-propyl-1-cyclohexanol B 2-propenyl-1-cyclohexanol C2-propylcyclohexanone D 1-propyl-2-cyclohexanol What is the oxidation product of this compound? H' A ethanoic acid acetic acid propanoic acid D propanone What is the oxidation product of this compound? A 3,4-dimethylpentanoic acid B 2,3-dimethylpentanoic acid C2,3-dimethylpentanone 3,4-dimethylpentanonearrow_forwardreaction of ketones with phosphorus halidesarrow_forwardWhen trichloroacetaldehyde is dissolved in water, almost all of it is converted to the hydrate. Chloral hydrate, the product of the reaction, is a sedative that can be lethal. A cocktail laced with it is known—in detective novels,at least—as a “Mickey Finn.” Explain why an aqueous solution of trichloroacetaldehyde is almost all hydrate.arrow_forward
- Acetylene reacts with sodium amide in the presence of propyl halide produces aldehyde produces ketones It produces 2-pentanearrow_forwardOH 6 From ethyl bromide and a substituted phenyl derivativearrow_forwardDraw the products formed when phenol (C6H5OH) is treated with following set of reagents. [1] HNO3 , H2SO4; [2] Sn, HClarrow_forward
- Draw out the reaction mechanism for cyclohexanol to cyclohexanone. Sodium hypochlorite oxidation of an alcohol to a ketone with the product being cyclohexanone.arrow_forwardGive the main organic product for the following reaction: CH2OH OH H3O* CH3CH2CH2OH OH OHarrow_forwardSeveral diamines are building blocks for the synthesis of pharmaceuticals and agro-chemicals. Show how both 1,3-propanediamine and 1,4-butanediamine can be prepared from acrylonitrile.arrow_forward
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