Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Textbook Question
Chapter 11, Problem 73P
Explain why the acid-catalyzed dehydration of an alcohol is a reversible reaction, whereas the base-promoted dehydrohalogenation of an
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The reaction of a ketone with an alcohol in acidic conditions will result in:
an alkane
an acetal
a geminal (gem) diol
an alkene
Alkyl sulfonates undergo the same type of substitution reactions as alkyl halides and can also be prepared
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Hydration of aldehydes and ketones can be catalyzed by acid
or base. Bases catalyze hydration by:
protonating the carbonyl oxygen
making the carbonyl group more electrophilic
employing hydroxide ion, which is a better nucleophile than water
making the carbonyl group less electrophilic
shifting the equilibrium position of the reaction to favor products
Chapter 11 Solutions
Organic Chemistry
Ch. 11.1 - Why are NH3 and CH3NH2 no longer nucleophiles when...Ch. 11.1 - Prob. 2PCh. 11.1 - Prob. 5PCh. 11.2 - Prob. 7PCh. 11.3 - Prob. 9PCh. 11.3 - Show how 1-propanol can be converted into the...Ch. 11.4 - Which of the following alcohols dehydrates the...Ch. 11.4 - Prob. 12PCh. 11.4 - Prob. 13PCh. 11.4 - Propose a mechanism for each of the following...
Ch. 11.4 - Draw the product of each of the following...Ch. 11.4 - Explain why the following alcohols, when heated...Ch. 11.4 - What stereoisomers are formed in the following...Ch. 11.4 - Prob. 18PCh. 11.4 - What alcohol would you treat with phosphorus...Ch. 11.5 - Prob. 20PCh. 11.6 - Prob. 22PCh. 11.7 - Prob. 24PCh. 11.7 - Would you expect the reactivity of a five-membered...Ch. 11.7 - Prob. 26PCh. 11.7 - What products are obtained from the reaction of...Ch. 11.7 - Prob. 28PCh. 11.7 - Prob. 29PCh. 11.7 - Prob. 30PCh. 11.8 - Prob. 31PCh. 11.8 - Prob. 32PCh. 11.8 - How do the major products obtained from...Ch. 11.8 - Explain why the two arene oxides in Problem 38...Ch. 11.8 - Three arene oxides can be obtained from...Ch. 11.9 - Explain why the half-life (the time it takes for...Ch. 11.10 - Prob. 38PCh. 11.10 - Prob. 39PCh. 11.10 - Prob. 40PCh. 11.10 - Prob. 41PCh. 11.10 - Prob. 42PCh. 11.11 - Using an alkyl halide and a thiol as starting...Ch. 11.11 - The following three nitrogen mustards were studied...Ch. 11.11 - Why is melphalan a good cancer drug?Ch. 11.11 - Prob. 47PCh. 11 - Prob. 48PCh. 11 - Which compound is more likely to be carcinogenic?Ch. 11 - Prob. 50PCh. 11 - Prob. 51PCh. 11 - Write the appropriate reagent over each arrow.Ch. 11 - What alkenes would you expect to be obtained from...Ch. 11 - Prob. 54PCh. 11 - When heated with H2SO4, both...Ch. 11 - What is the major product obtained from the...Ch. 11 - When deuterated phenanthrene oxide undergoes a...Ch. 11 - An unknown alcohol with a molecular formula of...Ch. 11 - Prob. 59PCh. 11 - Prob. 60PCh. 11 - Propose a mechanism for the following reaction:Ch. 11 - What product would be formed if the four-membered...Ch. 11 - Which of the following ethers would be obtained in...Ch. 11 - Using the given starting material any necessary...Ch. 11 - Prob. 65PCh. 11 - When 3-methyl-2-butanol is heated with...Ch. 11 - Propose a mechanism for each of the following...Ch. 11 - How could you synthesize isopropyl propyl ether,...Ch. 11 - When the following seven-membered ring alcohol is...Ch. 11 - Ethylene oxide reacts readily with HO because of...Ch. 11 - Prob. 71PCh. 11 - Propose a mechanism for each of the following...Ch. 11 - Explain why the acid-catalyzed dehydration of an...Ch. 11 - Triethylene glycol is one of the products obtained...Ch. 11 - Prob. 75PCh. 11 - Prob. 76PCh. 11 - When ethyl ether is heated with excess HI for...Ch. 11 - Propose a mechanism for the following reaction:Ch. 11 - Prob. 79PCh. 11 - An ion with a positively charged nitrogen atom in...Ch. 11 - Propose a mechanism for each of the following...Ch. 11 - Prob. 82PCh. 11 - The following reaction takes place several times...Ch. 11 - A vicinal diol has OH groups on adjacent carbons....Ch. 11 - Prob. 85PCh. 11 - Prob. 86PCh. 11 - Two stereoisomers are obtained from the reaction...Ch. 11 - Propose a mechanism for each or the following...Ch. 11 - Triethylenemelamine (TEM) is an antitumor agent....
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- What two alkenes give rise to each alcohol as the major product of acid-catalyzed hydration?arrow_forwardPredict the alcohol products of the hydration, hydroboration, and dihydroxylation of alkenes.arrow_forwardChoose the best explanation for why these compounds are all less than fifteen carbons. A) Aldehydes with longer alkyl chains become increasingly nonpolar and the LDF are stronger than hydrogen bonding with ethanol. B) Ethanol molecules will hydrogen bond with the oxygen of the aldehydes. However, longer alkyl chains interrupt the ability of the aldehyde to hydrogen bond with ethanol which decreases the solubility. C) Ethanol molecules will form strong LDF interactions between the alkyl chains of the aldehydes and the alkyl groups of ethanol. The strong attractions cause the aldehydes to precipitate out of solution. D) When aldehydes chain length increases, the aldehydes have stronger intermolecular force with the small ethanol solvent molecules than the ethanol-ethanol intermolecular force.arrow_forward
- Acid-catalyzed dehydration of secondary and tertiary alcohols proceeds through an E1 mechanism. The first step is the protonation of the alcohol oxygen to form an oxonium ion. Dehydration of 3-methyl-2-butanol forms one major and two minor organic products. Draw the structures, including hydrogen atoms, of the three organic products of this reaction. н н :бн н Нас. Нас. CHз CH3 ČH3 CH3 3-methyl-2-butanol an oxonium ion Major Product Minor Product Minor Productarrow_forwardDetermine the structure of the methyl ester and organomagnesium bromide reagents that can be combined to form the following alcohol: Part 1: Draw the bond-line formula for the methyl ester reagent. Disregard stereochemistry. Part 2: Draw the bond-line formula for the organomagnesium bromide reagent. Disregard stereochemistry.arrow_forwardWhen trans-2-chloro-1-cyclohexanol is treated with a base, cyclohexene oxide is the product. However, when cis-2-chloro-1-cyclohexanol is treated with a base, the product is cyclohexanone, whyarrow_forward
- Which compound is a tertiary alcohol that may not be oxidized by H2CrO4 or MnO2? Which compound is a secondary alcohol that may be oxidized to a ketone by MnO2? Which compound is an alcohol that may be oxidized to an aldehyde by PCC?arrow_forward17-60 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_forwardIdentify the most important aldehyde and ketone from Section 14.4 on the basis of amount used, and list at least one characteristic for each that contributes to its usefulness.arrow_forward
- A problem often encountered in the oxidation of primary alcohols to acids is that esters are sometimes produced as by-products. For example, oxidation of ethanol yields acetic acid and ethyl acetate: Propose a mechanism to account for the formation of ethyl acetate. Take into account the reversible reaction between aldehydes and alcohols:arrow_forwardAldehydes and ketones react with one molecule of an alcohol to form compounds called hemiacetals, in which there is one hydroxyl group and one ether-like group. Reaction of a hemiacetal with a second molecule of alcohol gives an acetal and a molecule of water. ROH, H+ OH OR Aldehyde/ketone Alcohol ROH, H+ Draw the structural formulas for the hemiacetal and the acetal formed between the following compounds: OH OH OR OR • Use the wedge/hash bond tools to indicate stereochemistry where it exists. + H₂Oarrow_forwardIdentify the product, if any, that would form in each of the following reactions. 73) CH3 - CH2-CH2-OH [0] A) || CH3- CH2 - C- CH3 74) [0] B) CH 3 - CH 2 - CH -OH || CH3 CH3 - CH2 - CH Match the structural formula with the correct functional group. 75) CНз - СH2 -ОН A) alcohol 76) CH3 – CH2¤0 ICH3 B) thiol 77) CH3- CH2 - SH C) ether Select the correct name for the following. 78) CH3 - CH2 - CH2 - SH A) propanethiol 79) CH3 - CH2 - O - CH2 - CH3 B) diethyl ether 80) C) m-ethylphenol OH CH2CH3 D) 1-ethyl-3- hydroxycyclohexene E) propane sulfidearrow_forward
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