ORGANIC CHEMISTRY
5th Edition
ISBN: 9781259977596
Author: SMITH
Publisher: MCG
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Chapter 22, Problem 22.61P
Interpretation Introduction
Interpretation: A stepwise mechanism for the conversion of lactone A to ester B by the use of
Concept introduction: The replacement or substitution of one
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A
Draw a stepwise mechanism for the conversion of lactone A to ester B
using HCI in ethanol. B is converted in one step to ethyl chrysanthemate,
a useful intermediate in the synthesis of a variety of pyrethrins, naturally
occurring insecticides with three-membered rings that are isolated from
chrysanthemums
HCI
OH
B
one step
ethyl chrysanthemate
One step in the synthesis of the antihistamine fexofenadine (Section 23.5) involves acid-catalyzed hydration of the triple bond in A. Draw a stepwise mechanism for this reaction and explain why only ketone B is formed.
explain and show step by step how the product formed when phenyacetic acid is treated with reagents in letter L and K only. this is about carboxylic acid and its derivatives
Chapter 22 Solutions
ORGANIC CHEMISTRY
Ch. 22 - Prob. 22.1PCh. 22 - Draw the three possible resonance structures for...Ch. 22 - Prob. 22.3PCh. 22 - Give an IUPAC or common name for each compound. a....Ch. 22 - Problem 22.5 Draw the structure corresponding to...Ch. 22 - Problem 22.6 Explain why the boiling point of is...Ch. 22 - Problem 22.7 How would the compounds in each pair...Ch. 22 - Problem 22.8 Deduce the structures of compounds ...Ch. 22 - Problem 22.9 Without reading ahead in Chapter 22,...Ch. 22 - Rank the compounds in each group in order of...
Ch. 22 - Prob. 22.11PCh. 22 - Prob. 22.12PCh. 22 - Prob. 22.13PCh. 22 - Prob. 22.14PCh. 22 - Problem 22.15 Draw the products of each...Ch. 22 - Problem 22.16 Draw the products of each reaction.
...Ch. 22 - Prob. 22.17PCh. 22 - Problem 22.18 Draw a stepwise mechanism for the...Ch. 22 - Prob. 22.19PCh. 22 - Problem 22.20 Fenofibrate is a...Ch. 22 - Problem 22.21 What product is formed when the...Ch. 22 - How would you synthesize olestra from sucrose?
Ch. 22 - Problem 22.23 What is the composition of the soap...Ch. 22 - Problem 22.24 Draw a stepwise mechanism for the...Ch. 22 - Prob. 22.25PCh. 22 - Problem 22.26 Some penicillins cannot be...Ch. 22 - Prob. 22.27PCh. 22 - Prob. 22.28PCh. 22 - Prob. 22.29PCh. 22 - Problem 22.30 Glucosamine is a dietry supplement...Ch. 22 - Draw the products of each reaction. a. c. b.Ch. 22 - Draw a tautomer of each compound.
a. b. c.
Ch. 22 - Draw the product of each reaction. a. b.Ch. 22 - Draw the product of each reaction. a. b.Ch. 22 - Prob. 22.35PCh. 22 - Problem 22.36 Outline two different ways that can...Ch. 22 - 22.37 Rank the following compounds in order of...Ch. 22 - Prob. 22.38PCh. 22 - Prob. 22.39PCh. 22 - 22.40 Give the IUPAC or common name for each...Ch. 22 - 22.41 Give the structure corresponding to each...Ch. 22 - Prob. 22.42PCh. 22 - 22.43 Explain why is a stronger acid and a weaker...Ch. 22 - (a) Propose an explanation for the difference in...Ch. 22 - Draw the product formed when phenylacetic acid is...Ch. 22 - Draw the product formed when phenylacetonitrile ...Ch. 22 - 22.47 Draw the organic products formed in each...Ch. 22 - Prob. 22.48PCh. 22 - Prob. 22.49PCh. 22 - Prob. 22.50PCh. 22 - Prob. 22.51PCh. 22 - Prob. 22.52PCh. 22 - Prob. 22.53PCh. 22 - 22.54 Draw a stepwise mechanism f or the following...Ch. 22 - 22.55 When acetic acid () is treated with a trace...Ch. 22 - Prob. 22.56PCh. 22 - Prob. 22.57PCh. 22 - Draw a stepwise mechanism for the following...Ch. 22 - Prob. 22.59PCh. 22 - Prob. 22.60PCh. 22 - Prob. 22.61PCh. 22 - Draw a stepwise mechanism for the following...Ch. 22 - 22.63 Acid-catalyzed hydrolysis of forms compound...Ch. 22 - 22.64 What carboxylic acid and alcohol are needed...Ch. 22 - Problem 22.65 Devise a synthesis of each compound...Ch. 22 - Prob. 22.66PCh. 22 - Prob. 22.67PCh. 22 - Prob. 22.68PCh. 22 - Prob. 22.69PCh. 22 - 22.70 What polyester or poly amide can be prepared...Ch. 22 - 22.71 What two monomers are needed to prepare each...Ch. 22 - Prob. 22.72PCh. 22 - 22.73 How can IR spectroscopy be used to...Ch. 22 - 22.74 Rank the following compounds in order of...Ch. 22 - 22.75 Identify the structures of each compound...Ch. 22 - 22.76 Identify the structures of A and B, isomers...Ch. 22 - Prob. 22.77PCh. 22 - 22.78 Identify the structure of compound C...Ch. 22 - 22.79 Identify the structures of D and E, isomers...Ch. 22 - 22.80 With reference to amides A and B, the...Ch. 22 - Prob. 22.81PCh. 22 - Prob. 22.82PCh. 22 - Prob. 22.83PCh. 22 - Draw a stepwise mechanism for the following...Ch. 22 - Draw a stepwise mechanism for the following...
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- Draw a stepwise mechanism for the formation of A from an alcohol and acid chloride. A was converted in one step to blattellaquinone, the sex pheromone of the female German cockroach, Blattella germanica.arrow_forwardRank the attached carbonyl compounds in order of increasing percentage of hydrate present at equilibrium.arrow_forwardDevise a synthesis of anastrozole, a drug used to reduce the recurrence of breast cancer (Section 22.18), from the given compounds. You may use any other needed organic compounds or inorganic reagents. CN Br Br HN- NC. anastrozolearrow_forward
- Draw a stepwise mechanism for the conversion of lactone A to ester B using HCl in ethanol. B is converted in one step to ethyl chrysanthemate, a useful intermediate in the synthesis of a variety of pyrethrins, naturally occurring insecticides with three-membered rings that are isolated from chrysanthemums.arrow_forward18.65 Propose a plausible synthesis for the following trans- formation. CH3 CH3 CH3arrow_forwardWhat product is formed when a solution of A and B is treated with mild base? This reaction is the rst step in the synthesis of rosuvastatin (sold as a calcium salt under the trade name Crestor), a drug used to treat patients with high cholesterol.arrow_forward
- MeO 22.55 One potential synthesis of the anti-inflammatory and analgesic drug nabumetone is chloromethylation (Problem 22.48) of 2-methoxynaphthalene followed by an acetoacetic ester synthesis (Section 19.6). 5 3 6 CH₂O CI acetoacetic ester synthesis HC 7 MeO MeO 1 8 2-Methoxynaphthalene Nabumetone (a) Account for the regioselectivity of chloromethylation at carbon 6 rather than at carbon 5 or 7. (b) Show steps in the acetoacetic ester synthesis by which the synthesis of nabum- etone is completed.arrow_forwardDraw a stepwise mechanism for the conversion of lactone C to carboxylic acid D. C is a key intermediate in the synthesis of prostaglandins (Section 19.6) by Nobel Laureate E. J. Corey and co-workers at Harvard University. CH,0 [1] KOH, H,O co,H [2) H,O* OCH3 HO Darrow_forwardBromoetherication, the addition of the elements of Br and OR to a double bond, is a common method for constructing rings containing oxygen atoms. This reaction has been used in the synthesis of the polyether antibiotic monensin (Problem 21.37). Draw a stepwise mechanism for the following intramolecular bromoetherication reaction.arrow_forward
- 20.39 Draw the product formed when phenylacetic acid (C6 H5CH2COOH) is treated with each reagent. With some reagents, no reaction occurs. а. NaHCOз Main content b. NaOH c. SOCI2arrow_forwardThe analgesic naproxen can be prepared by a stepwise reaction sequence from ester A. Using enolate alkylation in one step, what reagents are needed to convert A to naproxen? Draw the structure of each intermediate. Explain why a racemic product is formed.arrow_forward(b) Draw a stepwise mechanism for the following transformation from A to B. This reaction is one of the key steps in a synthesis of lysergic acid diethyl amide (aka LSD). CI A CH ₂ AIC13 B CH₂ several steps away from lysergic acid diethyl amide (LSD)arrow_forward
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