Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 21.SE, Problem 81AP
Interpretation Introduction
Interpretation:
To explain the reactivity of an amide is formed from an acid chloride or an anhydride, two moles of base are required. However, when an ester is used as the starting material, only one equivalent of base is needed.
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Chapter 21 Solutions
Organic Chemistry
Ch. 21.1 - Give IUPAC names for the following substances:Ch. 21.1 - Draw structures corresponding to the following...Ch. 21.2 - Prob. 3PCh. 21.2 - Rank the compounds in each of the following sets...Ch. 21.2 - Predict the products of the following nucleophilic...Ch. 21.2 - Prob. 6PCh. 21.3 - Prob. 7PCh. 21.3 - If the following molecule is treated with acid...Ch. 21.4 - How might you prepare the following esters using a...Ch. 21.4 - Prob. 10P
Ch. 21.4 - Prob. 11PCh. 21.4 - Prob. 12PCh. 21.4 - Prob. 13PCh. 21.5 - Prob. 14PCh. 21.5 - What product would you expect from reaction of one...Ch. 21.6 - Prob. 16PCh. 21.6 - Prob. 17PCh. 21.6 - Show the products you would obtain by reduction of...Ch. 21.6 - What ester and what Grignard reagent might you...Ch. 21.7 - Prob. 20PCh. 21.7 - How would you use the reaction of an amide with...Ch. 21.8 - Write the mechanism of the reaction shown in...Ch. 21.9 - Prob. 23PCh. 21.9 - Prob. 24PCh. 21.10 - Prob. 25PCh. 21.10 - Prob. 26PCh. 21.SE - Name the following compounds:Ch. 21.SE - Prob. 28VCCh. 21.SE - Prob. 29VCCh. 21.SE - Prob. 30VCCh. 21.SE - Predict the product(s) and provide the mechanism...Ch. 21.SE - Predict the product(s) and provide the mechanism...Ch. 21.SE - Predict the product(s) and provide the mechanism...Ch. 21.SE - Predict the product(s) and provide the complete...Ch. 21.SE - Prob. 35MPCh. 21.SE - When 4-dimethylaminopyridine (DMAP) is added in...Ch. 21.SE - Prob. 37MPCh. 21.SE - Prob. 38MPCh. 21.SE - Prob. 39MPCh. 21.SE - The hydrolysis of a biological thioester to the...Ch. 21.SE - Prob. 41MPCh. 21.SE - Prob. 42MPCh. 21.SE - Prob. 43MPCh. 21.SE - In the iodoform reaction, a triiodomethyl ketone...Ch. 21.SE - Give IUPAC names for the following compounds:Ch. 21.SE - Prob. 46APCh. 21.SE - Draw and name compounds that meet the following...Ch. 21.SE - Predict the product, if any, of reaction between...Ch. 21.SE - Prob. 49APCh. 21.SE - Prob. 50APCh. 21.SE - What product would you expect to obtain from...Ch. 21.SE - Prob. 52APCh. 21.SE - Prob. 53APCh. 21.SE - The following reactivity order has been found for...Ch. 21.SE - Prob. 55APCh. 21.SE - Outline methods for the preparation of...Ch. 21.SE - Prob. 57APCh. 21.SE - When ethyl benzoate is heated in methanol...Ch. 21.SE - tert-Butoxycarbonyl azide, a reagent used in...Ch. 21.SE - Prob. 60APCh. 21.SE - Prob. 61APCh. 21.SE - What is the structure of the polymer produced by...Ch. 21.SE - Polyimides with the structure shown are used as...Ch. 21.SE - Prob. 64APCh. 21.SE - Propose a structure for a compound, C4H7ClO2, that...Ch. 21.SE - Assign structures to compounds with the following...Ch. 21.SE - Prob. 67APCh. 21.SE - When a carboxylic acid is dissolved in...Ch. 21.SE - Prob. 69APCh. 21.SE - Prob. 70APCh. 21.SE - Prob. 71APCh. 21.SE - Phenyl 4-aminosalicylate is a drug used in the...Ch. 21.SE - N,N-Diethyl-m-toluamide (DEET) is the active...Ch. 21.SE - Tranexamic acid, a drug useful against blood...Ch. 21.SE - One frequently used method for preparing methyl...Ch. 21.SE - Prob. 76APCh. 21.SE - Assign structures to compounds with the following...Ch. 21.SE - Propose structures for compounds with the...Ch. 21.SE - Propose a structure for the compound with the...Ch. 21.SE - Draw the structure of the compound that produced...Ch. 21.SE - Prob. 81APCh. 21.SE - Epoxy adhesives are prepared in two steps. SN2...
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- Write the mechanism for the following reactions:1. the acid-catalyzed hydrolysis of an imine to a carbonyl compound and a primary amine2. the acid-catalyzed hydrolysis of an enamine to a carbonyl compound and a secondary aminearrow_forwardRank each set of compounds in order of increasing basicity.aniline, pyrrole, pyridine, piperidinearrow_forwardExplain how the class I carbonyl compound reacts? What will be the product when ethylamine and propyl amine reacts with acetyl chloride? Why only one amide obtained after the reaction of acetyl chloride with a mixture of ethylamine and trimethylamine? Excess amine is required in the reaction of acetyl chloride with amine whereas excess alcohol is not required in the reaction of acetyl chloride and alcohol. Why? List the following ester in order of decreasing reactivities towards hydrolysis with reason: Methyl benzoate, p-nitro methyl benzoate and p-methoxy methyl benzoatearrow_forward
- Why is it not advisable to use aqueous hydrochloric acid in a Grignard reaction of a ketone? A) The Grignard reagent will react with the acid and cannot react with the ketone. B) The ketone will be protonated and will become unreactive. C) The ketone will form an unreactive enol. D) The Grignard reagent won't dissolve in aqueous solutionsarrow_forwardRank the following in order of decreasing basicity and explain why (based on their structures). hydroxide ion, ethoxide ion, phenoxide ion, and carboxylate ionarrow_forwardWhen acetophenone, hydroxelamine hydrochloride, and sodium hydroxide are reacted to synthesize acetophenone oxime, why is it necessary to add hydrochloric acid after the reaction to make it acidic?arrow_forward
- We have seen that the alpha carbon atom of an enamine can function as a nucleophile in a Michael reaction, and in fact, enamines can function as nucleophiles in a wide variety of reactions. For example, an enamine will undergo alkylation when treated with an alkyl halide. Draw the structure of intermediate A and the alkylation product B in the following reaction scheme (J. Am. Chem. Soc. 1954, 76, 2029-2030): TSOH -H₂O NH A 1) CHgI 2) H₂O+ B + NH Modify the given copy of the starting material to draw compound A. If needed, use the single bond tool to interconvert between double and single bonds. Edit Drawingarrow_forwardEarly organic chemists used the Hofmann elimination reaction as the last step of a process known as a Hofmann degradation—a method used to identify amines. In a Hofmann degradation, an amine is methylated with excess methyl iodide in a basic solution, treated with silver oxide to convert the quaternary ammonium iodide to a quaternary ammonium hydroxide, and then heated to allow it to undergo a Hofmann elimination. Once the alkene product is identified, working backward gives the structure of the amine. Identify the amine in each of the following cases: a. 4-Methyl-2-pentene is obtained from the Hofmann degradation of a primary amine. b. 3-Methyl-1-butene is obtained from the Hofmann degradation of a primary amine. c. 2-Methyl-1-3-butadiene is obtained from two successive Hofmann degradations of a secondary amine.arrow_forwardPropose a mechanism for the reaction of benzyl acetate with methylamine. Label theattacking nucleophile and the leaving group, and draw the transition state in which theleaving group leaves.arrow_forward
- Amidation Reactions Part A Learning Goal: To identify characteristics common to all amidation reactions, and to apply these generalities in drawing specific amidation reactants or products. Part B Amidation reactions are condensation reactions. In a condensation reaction, two molecules join with a new covalent bond, and this results from the removal of a small molecule such as a water molecule. The reactants in amidation are a carboxylic acid and an amine, and the products are an amide and a water molecule. The carboxylic acid reactant can be of any type. The amine can be simple ammonia (NH₂). a primary amine. or a secondary amine. It cannot be a tertiary amine because tertiary amines lack the N-H Aspartame, an amide, is the sweetener commonly used in diet cola. COOH CH2 < 33 of 38 Review | Constants | Periodic Table CH2 O H₂N CH C NH-CH-COOCH3 7 H 2D EXP. CONT. aspartame Draw the carboxylic acid that is a reactant in the production of aspartame. Draw the molecule on the canvas by…arrow_forwardExplain the reaction for the formation of acetal and hemiacetal. Explain why N,N-disubstituted amide is less acidic than ester. Why only methyl ketone do undergoes haloform reaction. LDA is the base of choice for carbonyl compound to completely convert into enolate. Why?arrow_forwardWhy does cyclohexanol have a pK, of 18 and phenol, despite its similarities in structure, have a pK, of 10? Phenol has a resonance-stabilized conjugate base, which increases the stability of the base and favors its formation Cycohexanol has a resonance-stabilized structure, which increases its stability and reduces the likelihood that it will react to form a conjugate base Phenol has a resonance-stabilized conjugate base, which decreases the stability of the base and inhibits its formation Cycohexanol has a resonance-stabilized conjugate base, which increases the stability of the base and favors its formation Phenol has a resonance-stabilized conjugate base, which decreases the stability of the base and favors its formationarrow_forward
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