Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 18.2, Problem 2P
Why do you suppose only symmetrical ethers are prepared by the sulfuric-acid-catalyzed dehydration procedure? What product(s) would you expect if ethanol and 1-propanol were allowed to react together? In what ratio would the products be formed if the two alcohols were of equal reactivity?
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Chapter 18 Solutions
Organic Chemistry
Ch. 18.1 - Name the following ethers:Ch. 18.2 - Why do you suppose only symmetrical ethers are...Ch. 18.2 - How would you prepare the following ethers using a...Ch. 18.2 - Review the mechanism of oxymercuration shown in...Ch. 18.2 - How would you prepare the following ethers? Use...Ch. 18.2 - Prob. 6PCh. 18.3 - Prob. 7PCh. 18.3 - Write the mechanism of the acid-induced cleavage...Ch. 18.3 - Why are HI and HBr more effective than HCl in...Ch. 18.4 - What product would you expect from Claisen...
Ch. 18.5 - Prob. 11PCh. 18.6 - Predict the major product of each of the following...Ch. 18.6 - Prob. 13PCh. 18.6 - Predict the major product of the following...Ch. 18.7 - 15-Crown-5 and 12-crown-4 ethers complex Na+ and...Ch. 18.8 - Prob. 16PCh. 18.8 - 2-Butene-l-thiol is one component of skunk spray....Ch. 18.9 - The 1H NMR spectrum shown is that of a cyclic...Ch. 18.SE - Give IUPAC names for the following compounds...Ch. 18.SE - Show the product, including stereochemistry, that...Ch. 18.SE - Prob. 21VCCh. 18.SE - Treatment of the following alkene with a...Ch. 18.SE - Prob. 23MPCh. 18.SE - Prob. 24MPCh. 18.SE - Predict the product(s) and provide the mechanism...Ch. 18.SE - The alkoxymercuration of alkenes involves the...Ch. 18.SE - Predict the product(s) and provide the mechanism...Ch. 18.SE - Predict the product(s) and provide the mechanism...Ch. 18.SE - Prob. 29MPCh. 18.SE - Ethers undergo an acid-catalyzed cleavage reaction...Ch. 18.SE - Treatment of 1, 1-diphenyl-l, 2-epoxyethane with...Ch. 18.SE - Fluoxetine, a heavily prescribed antidepressant...Ch. 18.SE - When 2-methyl-2, 5-pentanediol is treated with...Ch. 18.SE - Prob. 34MPCh. 18.SE - Prob. 35MPCh. 18.SE - Aldehydes and ketones undergo acid-catalyzed...Ch. 18.SE - Propose a mechanism to account for the following...Ch. 18.SE - Prob. 38APCh. 18.SE - Prob. 39APCh. 18.SE - How would you prepare the following ethers?Ch. 18.SE - Prob. 41APCh. 18.SE - tert-Butyl ethers can be prepared by the reaction...Ch. 18.SE - Treatment of trans-2-chlorocyclohexanol with NaOH...Ch. 18.SE - Predict the products of the following ether...Ch. 18.SE - Prob. 45APCh. 18.SE - Prob. 46APCh. 18.SE - Write the mechanism of the hydrolysis of cis-5,...Ch. 18.SE - Prob. 48APCh. 18.SE - Acid-catalyzed hydrolysis of a 1,...Ch. 18.SE - Prob. 50APCh. 18.SE - Epoxides are reduced by treatment with lithium...Ch. 18.SE - Prob. 52APCh. 18.SE - The red fox (Vulpes vulpes) uses a chemical...Ch. 18.SE - Anethole, C10H12O, a major constituent of the oil...Ch. 18.SE - Propose structures for compounds that have the...Ch. 18.SE - Prob. 56GPCh. 18.SE - How would you synthesize anethole (Problem 18-54)...Ch. 18.SE - How could you prepare benzyl phenyl ether from...Ch. 18.SE - Meerwein's reagent, triethyloxonium...Ch. 18.SE - Prob. 60GPCh. 18.SE - Prob. 61GPCh. 18.SE - The Zeisel method is an old analytical procedure...Ch. 18.SE - Prob. 63GPCh. 18.SE - Prob. 64GPCh. 18.SE - Prob. 65GPCh. 18.SE - Identify the reagents a-e in the following scheme:Ch. 18.SE - Propose structures for compounds that have the...Ch. 18.SE - Prob. 68GPCh. 18.SE - Prob. 69GPCh. 18.SE - Predict the product(s) if the starting materials...
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- The base-promoted rearrangement of an -haloketone to a carboxylic acid, known as the Favorskii rearrangement, is illustrated by the conversion of 2-chlorocyclohexanone to cyclopentanecarboxylic acid. It is proposed that NaOH first converts the a-haloketone to the substituted cyclopropanone shown in brackets and then to the sodium salt of cyclopentanecarboxylic acid. (a) Propose a mechanism for base-promoted conversion of 2-chlorocyclohexanone to the proposed intermediate. (b) Propose a mechanism for base-promoted conversion of the proposed intermediate to sodium cyclopentanecarboxylate.arrow_forward1-pentanol + NaBr/H2SO4 -> 1-bromopentane Is this substitution reaction reversible? In other words, would one expect to obtain an equilibrium mixture of the alcohol and bromoalkene at the end of the reaction of would one expect this reaction to go to completion? Justify your answer?arrow_forward1. (a) Which compound would have the highest boiling point? benzophenone toluene acetophenone benzaldehyde (b) Which of the reagents listed below can convert a primary alcohol to an aldehyde? H2CrO4 DMSO, (COCl)2, Et3N AgNO3 KMnO4-, NaOH (c) Oxidation of alcohols involving the use of DMSO and (COCl)2 is also known as which of the following? Jones Tollens Baeyer-Villiger Swernarrow_forward
- If ethanol was added to each of the following, which would be ineffective in preparing ethyl benzoate? Benzoyl chloride. Benzoic anhydride. Benzoic acid with catalytic sulfuric acid. Benzamide. What is the stereochemistry of this compound? 2E, 5E 2Z, 5Z 2Z, 5E 2E, 5Zarrow_forwardWrite the equations involved in the following reactions:(i) Reimer-Tiemann reaction(ii) Williamson’s ether Synthesisarrow_forwardIn an elimination procedure, 2-chloro-2-methylbutane was mixed with a 1-propanol solution (containing KOH). Draw out the structures for this reaction and state the limiting reagent.arrow_forward
- Give a clear handwritten answer with explanation...Two of the possible answers are correct, one being 2-methylbut-1-enyl-benzene. What is the other?arrow_forwardA hydrocarbon (X), with the molecular formula: C8H14 is reduced in presence of sodium and liquid ammonia to give the only product (Y) with the molecular formula: C8H16. Compounds X and Y both resulting 2,5-dimethylhexane when treated with hydrogen and platinum catalyst (H2/Pt). As a result of the oxidative cleavage of compound Y (by using KMnO4 / H2SO4), a single carboxylic acid derivative with C4H8O2 molecular formula is formed. Again, as a result of the reaction of Y with perbenzoic acid, the chiral compound C8H14O is observed, but the reaction of compound Y with bromine gives the achiral C8H14Br2 as the product.arrow_forwardwe know that ethers, such as diethyl ether and tetrahydrofuran, are quite resistant to the action of dilute acids and require hot concentrated HI or HBr for cleavage. However, acetals in which two ether groups are linked to the same carbon undergo hydrolysis readily, even in dilute aqueous acid. How do you account for this marked difference in chemical reactivity toward dilute aqueous acid between ethers and acetals?arrow_forward
- How can 3,4-dimethyl-3-nitrohexane be synthesized from butane? Write a scheme for the sequential reactionarrow_forward(c) A series of dialkyl ethers react with excess hydrogen bromide, with the following results. Analyze the ether in each case and write out the complete chemical equations. (1) Ether gives a mixture of bromocyclopentane and 1-bromoethane. (ii) Another ether gives one mole of 1,5-dibromopentane per mole of ether.arrow_forwardPropanal and propanone react in a similar way with acidified aqueous potassium cyanide, KCN. For this reaction to occur reasonably quickly, the pH of the solution should be approximately 4. Draw a diagram to show the mechanism of the reaction of either propanal or propanone with acidified potassium cyanide.arrow_forward
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