Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 19.6, Problem 19.11P
Interpretation Introduction
Interpretation:
The conversion of ethyl 2-oxocyclopentanecarboxylate to the given compound has to be shown.
Concept introduction:
When two molecules of an ester undergo condensation, then it is called claisen condensation. Like in aldol reaction, in claisen condensation one molecule is a nucleophile and the other molecule is an electrophile.
A claisen condensation reaction is a reversible reaction and occurs in the presence of a strong base.
The first step of claisen condensation is the removal of a proton from alpha carbon by a base and then the addition of enolate ion formed to the second ester molecule forming a β-ketoester.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Show how to convert racemic ethyl 2-oxocyclopentanecarboxylate to this
compound.
COOH
(racemic)
In contrast, optically active butan-2-ol does not racemize on treatment with a solution of KOH. Explain why a reaction like that does not occur?
ASAP
What is the structure of the compounds
• 4-(2-methylprop-1-en-yl)cyclohex-4-ene-1,3-dione
• 3-((methoxymethoxy)methyl)-2,4-dimethylenepentanedioic anhydride
• 2-(phenylthio)phenol
• (Z)-3-acetylhex-2-en-5-ynenitrile
• 6-isopropyl-5,7-di(pentan-3-yl)undecane
Chapter 19 Solutions
Organic Chemistry
Ch. 19.2 - Prob. 19.1PCh. 19.2 - Prob. 19.2PCh. 19.2 - Prob. 19.3PCh. 19.3 - Prob. 19.4PCh. 19.3 - Prob. 19.5PCh. 19.3 - Prob. 19.6PCh. 19.5 - Prob. 19.7PCh. 19.5 - Prob. 19.8PCh. 19.5 - Prob. 19.9PCh. 19.6 - Prob. 19.10P
Ch. 19.6 - Prob. 19.11PCh. 19.7 - Prob. 19.12PCh. 19.8 - Prob. 19.13PCh. 19.8 - Prob. 19.14PCh. 19.8 - Prob. 19.15PCh. 19.8 - Prob. 19.16PCh. 19.9 - Prob. 19.17PCh. 19.9 - Prob. AQCh. 19.9 - Prob. BQCh. 19.9 - Prob. CQCh. 19.9 - Prob. DQCh. 19.9 - Prob. EQCh. 19.9 - Prob. FQCh. 19.9 - Prob. GQCh. 19.9 - Intermediate G in Synthesis III is produced as a...Ch. 19.9 - Prob. IQCh. 19.9 - Prob. JQCh. 19 - Prob. 19.18PCh. 19 - Prob. 19.19PCh. 19 - Prob. 19.20PCh. 19 - Prob. 19.21PCh. 19 - Prob. 19.22PCh. 19 - Prob. 19.23PCh. 19 - Cyclohexene can be converted to...Ch. 19 - Prob. 19.25PCh. 19 - Prob. 19.26PCh. 19 - Prob. 19.27PCh. 19 - Prob. 19.28PCh. 19 - Prob. 19.29PCh. 19 - Prob. 19.30PCh. 19 - Draw structural formulas for the -ketoesters...Ch. 19 - Prob. 19.32PCh. 19 - Prob. 19.33PCh. 19 - Propose a synthesis for each ketone, using as one...Ch. 19 - Prob. 19.35PCh. 19 - Claisen condensation between diethyl phthalate and...Ch. 19 - Prob. 19.37PCh. 19 - Prob. 19.38PCh. 19 - Prob. 19.39PCh. 19 - Enamines normally react with methyl iodide to give...Ch. 19 - Prob. 19.41PCh. 19 - Prob. 19.42PCh. 19 - Prob. 19.43PCh. 19 - Prob. 19.44PCh. 19 - Prob. 19.45PCh. 19 - Prob. 19.46PCh. 19 - Prob. 19.47PCh. 19 - Prob. 19.48PCh. 19 - Prob. 19.49PCh. 19 - Prob. 19.50PCh. 19 - Prob. 19.51PCh. 19 - Prob. 19.52PCh. 19 - Show experimental conditions by which to carry out...Ch. 19 - Prob. 19.55PCh. 19 - The compound 3,5,5-trimethyl-2-cyclohexenone can...Ch. 19 - Prob. 19.57PCh. 19 - Prob. 19.58PCh. 19 - The widely used anticoagulant warfarin (see...Ch. 19 - Following is a retrosynthetic analysis for an...Ch. 19 - Following are the steps in one of the several...Ch. 19 - Prob. 19.62PCh. 19 - Prob. 19.63PCh. 19 - Prob. 19.65PCh. 19 - Prob. 19.67PCh. 19 - Prob. 19.68PCh. 19 - Prob. 19.69PCh. 19 - In Problem 7.28, we saw this two-step sequence in...Ch. 19 - Using your reaction roadmaps as a guide, show how...Ch. 19 - Using your reaction roadmaps as a guide, show how...Ch. 19 - Using your reaction roadmaps as a guide, show how...Ch. 19 - Using your reaction roadmaps as a guide, show how...Ch. 19 - Using your reaction roadmaps as a guide, show how...Ch. 19 - Prob. 19.79PCh. 19 - Prob. 19.80PCh. 19 - Prob. 19.81PCh. 19 - The following molecule undergoes an intramolecular...
Knowledge Booster
Similar questions
- When norbornene undergoes hydroboration-oxidation, a mixture of two stereoisomers is produced in a roughly 6:1 ratio. (a) Draw both of these isomeric products. (b) Which product is favored? Hint: You should build a model of norbornene and consider the transition state leading to each product. 1. BH3 THF ? 2. H2O2, NaOH, H,O Norbornenearrow_forwardShow how you would synthesize each compound using methylenecyclohexane asyour starting material. If a chiral product is shown, assume that it is part of a racemicmixture.arrow_forwardOptically active 2-iodooctane slowly becomes racemic when treated with sodium iodide in an inert polar solvent. Explain whyarrow_forward
- Consider the following reaction. Draw the product (s) and if more than one product is formed determine which one is the major one. Discuss your reasons! DMSOarrow_forwardDraw the structures of compounds A and B in the scheme below. Be sure to indicate the stereochemistry. E2 Ph Elarrow_forwardAcid-catalyzed bromination of pentan-2-one (CH3COCH2CH2CH3) forms two products: BrCH2COCH2CH2CH3 (A)and CH3COCH(Br)CH2CH3 (B). Explain why the major product is B, with the Br atom on the more substituted side of the carbonyl group.arrow_forward
- Provide the products for the reactions, including the appropriate stereochemistry. 1) O3 i) 2) DMS H2 ii) Pdarrow_forwardDetermine the major product(s) of the following reaction (disregard stereochemistry): Pentan-3-one reacts with LDA first, then this intermediate reacts with 1-bromo-2-methylpropane Propan-2-one reacts with 1) LDA, then with 2) another propan-2-one followed by 3) hydronium ionarrow_forwardOptically active 2-iodobutaneslowly becomes racemic when treated with sodium iodide in an inert polar solvent. Explain whyarrow_forward
- When a solution of (R)-2-methyl-1-phenyl butan-1-one in aq.EtOH is treated with either acid or base it is converted to a racemic mixture. Provide a possible explanation.arrow_forwardExplain why the following bromoketone forms different bicyclic compounds under different reaction conditions:arrow_forwardWhat is the major product obtained from treating an excess of each of the following compounds with Cl2 in the presence of ultraviolet light at room temperature? Disregard stereoisomers.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning