Organic Chemistry (8th Edition)
8th Edition
ISBN: 9780134042282
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 16.4, Problem 6P
We saw on the previous page that 3-methyl-3-hexanol can be synthesized from the reaction of 2-pentanone with ethylmagnesium bromide. What other combinations of
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The following substances can be prepared by a nucleophilic addition reaction between an aldehyde or ketoneand a nucleophile. Identify the reactants from which they were prepared. If the substance is an acetal, identifythe carbonyl compound and the alcohol; if it is an imine or enamine, identify the carbonyl compound and theamine. You do not have to consider stereochemistry. In cases where there is more than one answer, just giveone. Use Grignard reagents when an organometallic reagent is required. Draw the Grignard reagent as acovalent magnesium bromide.
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Chapter 16 Solutions
Organic Chemistry (8th Edition)
Ch. 16.1 - Give two names for each of the following:Ch. 16.1 - Prob. 2PCh. 16.1 - Name the following:Ch. 16.2 - Prob. 4PCh. 16.4 - What products are formed when the following...Ch. 16.4 - We saw on the previous page that...Ch. 16.4 - a. How many stereoisomers are obtained from the...Ch. 16.4 - Prob. 9PCh. 16.4 - Write the mechanism for the reaction of acetyl...Ch. 16.4 - Prob. 11P
Ch. 16.4 - Show how the following compounds can be...Ch. 16.4 - Prob. 13PCh. 16.4 - Prob. 14PCh. 16.4 - In the mechanism for cyanohydrin formation, why is...Ch. 16.4 - Prob. 16PCh. 16.4 - Prob. 17PCh. 16.4 - Show two ways to convert an alkyl halide into a...Ch. 16.5 - Prob. 20PCh. 16.5 - Prob. 21PCh. 16.5 - Prob. 22PCh. 16.5 - Prob. 23PCh. 16.6 - Prob. 24PCh. 16.7 - What reducing agents should be used to obtain the...Ch. 16.7 - Prob. 26PCh. 16.8 - Prob. 27PCh. 16.8 - Prob. 28PCh. 16.8 - Prob. 29PCh. 16.8 - The pKa of protonated acetone is about 7.5. and...Ch. 16.8 - Prob. 31PCh. 16.8 - Prob. 32PCh. 16.8 - Prob. 33PCh. 16.8 - Excess ammonia must be used when a primary amine...Ch. 16.8 - The compounds commonly known as amino acids are...Ch. 16.9 - Hydration of an aldehyde is also catalyzed by...Ch. 16.9 - Which ketone forms the most hydrate in an aqueous...Ch. 16.9 - When trichloroacetaldehyde is dissolved in water,...Ch. 16.9 - Which of the following are a. hermiacetals? b....Ch. 16.9 - Prob. 40PCh. 16.9 - Explain why an acetal can be isolated but most...Ch. 16.10 - Prob. 42PCh. 16.10 - Prob. 43PCh. 16.10 - What products would be formed from the proceedings...Ch. 16.10 - a. In a six-step synthesis, what is the yield of...Ch. 16.10 - Show how each of the following compounds could be...Ch. 16.12 - Prob. 47PCh. 16.13 - Prob. 49PCh. 16.14 - Prob. 50PCh. 16.15 - Prob. 51PCh. 16.16 - Prob. 52PCh. 16 - Draw the structure for each of the following: a....Ch. 16 - Prob. 54PCh. 16 - Prob. 55PCh. 16 - Prob. 56PCh. 16 - a. Show the reagents required to form the primary...Ch. 16 - Prob. 58PCh. 16 - Prob. 59PCh. 16 - Using cyclohexanone as the starting material,...Ch. 16 - Propose a mechanism for each of the following...Ch. 16 - Show how each of the following compounds can be...Ch. 16 - Fill in the boxes:Ch. 16 - Prob. 64PCh. 16 - Identify A through O:Ch. 16 - Prob. 66PCh. 16 - Prob. 67PCh. 16 - Prob. 68PCh. 16 - How many signals would the product of the...Ch. 16 - Prob. 70PCh. 16 - Prob. 71PCh. 16 - Prob. 72PCh. 16 - Prob. 73PCh. 16 - Prob. 74PCh. 16 - Prob. 75PCh. 16 - Prob. 76PCh. 16 - Prob. 77PCh. 16 - Prob. 78PCh. 16 - Draw structure for A-D for each of the following:Ch. 16 - Prob. 80PCh. 16 - a. Propose a mechanism for the following reaction:...Ch. 16 - Prob. 82PCh. 16 - A compound gives the following IR spectrum. Upon...Ch. 16 - How can be following compounds be prepared from...Ch. 16 - Prob. 85PCh. 16 - Prob. 86PCh. 16 - Prob. 87PCh. 16 - In the presence of an acid catalyst, acetaldehyde...Ch. 16 - Prob. 89PCh. 16 - Prob. 90PCh. 16 - Prob. 91PCh. 16 - A compound reacts with methylmagnesium bromide...Ch. 16 - Show how each of the following compounds can be...Ch. 16 - Prob. 94PCh. 16 - The pKa values of the carboxylic acid groups of...Ch. 16 - The Baylis-Hillman reaction is a DABCO...Ch. 16 - Prob. 97PCh. 16 - Prob. 98P
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- Aldehydes 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. We study this reaction in Chapter 16. Draw structural formulas for the hemiacetal and acetal formed from these reagents. The stoichiometry of each reaction is given in the problem.arrow_forwardThe 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_forwardDescribe the product formed as a result of the reaction between cyclohexanone and 3-butene-2-one by also writing the mechanism of the reaction.arrow_forward
- How would you perform an experiment to produce cyclohexanol from cyclohexene? Describe in detail the reagents and glassware you would use including approximate amounts and concentrations of reagents. What steps would be needed to purify the cyclohexanol from the other reagents used in the reaction?arrow_forwardWhat organolithium reagent and carbonyl compound can be used to produce 1-cylobutyl-2- heptanol. You may use aldehydes, ketones or esters as the carbonyl starting materialsarrow_forwardGive the reagents for the following reaction.arrow_forward
- Write the corresponding products or reagents where necessary to obtain the products.arrow_forwardWrite a reaction that could be carried out to synthesize 1-(4-methylphenyl)ethanol (reactants will be a combination of Grignard reagent and carbonyl compound).arrow_forwardEsterification reactions, such as the one below, is a poor synthetic strategy as it leads to poor yields of the ester. What alternative could be done to produce more p-methylphenyl acetate? Replace the aromatic alcohol with a phenolate. Replace acetic acid with acetate. Replace the p-methylphenol with p-chlorotoluene. Replace acetic acid with acetyl chloride.arrow_forward
- We saw on the previous page that 3-methyl-3-hexanol can be synthesized from the reaction of 2-pentanone with ethylmagnesium bromide. What other combinations of ketone and Grignard reagent could be used to prepare the same tertiary alcohol?arrow_forwardWhat is the role of an acid catalyst in nucleophilic addition of aldehydes and ketone?arrow_forwarda) Cycohexanone reacts with 1,3-propanediol under acid catalysis to form the cyclic acetal. Write down the reaction mechanism and explain why the use of cyclic acetals as protecting groups is preferred over open- chain acetals. b) Eugenol (see below) is made from cloves. Give the structural formulas of the products which are formed after reaction of eugenol with i) BH3, then H2O2 / NaOH or after reaction with ii) acetic anhydride. OH Eugenolarrow_forward
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