Organic Chemistry-Package(Custom)
4th Edition
ISBN: 9781259141089
Author: SMITH
Publisher: MCG
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Chapter 16, Problem 16.73P
Interpretation Introduction
Interpretation:
The products formed for the given domino Diels-Alder reaction is to be identified.
Concept introduction:
A
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One step in the synthesis of dodecahedrane (Section 4.11) involves reaction of the tetraene C with dimethylacetylene dicarboxylate (D) to afford two compounds having molecular formula C16H16O4. This reaction has been called a domino Diels–Alder reaction. Identify the two products formed.
Dehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.
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Chapter 16 Solutions
Organic Chemistry-Package(Custom)
Ch. 16 - Prob. 16.1PCh. 16 - Prob. 16.2PCh. 16 - Draw a second resonance structure for each...Ch. 16 - Prob. 16.4PCh. 16 - Prob. 16.5PCh. 16 - Prob. 16.6PCh. 16 - Prob. 16.7PCh. 16 - Determine the hybridization of the labeled atom in...Ch. 16 - Problem 16.10 Draw the structure consistent with...Ch. 16 - Problem 16.11 Neuroprotectin D1 (NPD1) is...
Ch. 16 - Problem 16.12 Using hybridization, predict how the...Ch. 16 - Problem 16.13 Use resonance theory to explain why...Ch. 16 - Prob. 16.13PCh. 16 - Prob. 16.14PCh. 16 - Prob. 16.15PCh. 16 - Problem 16.17 Draw a stepwise mechanism for the...Ch. 16 - Prob. 16.17PCh. 16 - Problem 16.19 Draw the product formed when each...Ch. 16 - Prob. 16.19PCh. 16 - Prob. 16.20PCh. 16 - Rank the following dienophiles in order of...Ch. 16 - Prob. 16.22PCh. 16 - Prob. 16.23PCh. 16 - Prob. 16.24PCh. 16 - Prob. 16.25PCh. 16 - Problem 16.27 Which compound in each pair absorbs...Ch. 16 - Prob. 16.27PCh. 16 - 16.29 Name each diene and state whether the...Ch. 16 - Prob. 16.29PCh. 16 - Prob. 16.30PCh. 16 - Prob. 16.31PCh. 16 - Prob. 16.32PCh. 16 - Prob. 16.33PCh. 16 - Prob. 16.34PCh. 16 - 16.35 Explain why the cyclopentadienide anion A...Ch. 16 - Explain each statement using resonance theory. a....Ch. 16 - 16.37 Draw the structure of each compound.
a. in...Ch. 16 - Draw and name all dienes of molecular formula...Ch. 16 - Prob. 16.39PCh. 16 - 16.39 Label each pair of compounds as...Ch. 16 - Prob. 16.41PCh. 16 - 16.41 Draw the products formed when each compound...Ch. 16 - Prob. 16.43PCh. 16 - 16.43 Treatment of alkenes A and B with gives the...Ch. 16 - 16.44 Draw a stepwise mechanism for the following...Ch. 16 - Prob. 16.46PCh. 16 - 16.46 Explain, with reference to the mechanism,...Ch. 16 - Prob. 16.48PCh. 16 - Prob. 16.49PCh. 16 - Prob. 16.50PCh. 16 - Prob. 16.51PCh. 16 - Prob. 16.52PCh. 16 - Prob. 16.53PCh. 16 - 16.53 Diels–Alder reaction of a monosubstituted...Ch. 16 - Prob. 16.55PCh. 16 - Prob. 16.56PCh. 16 - 16.55 Devise a stepwise synthesis of each compound...Ch. 16 - Prob. 16.58PCh. 16 - 16.57 A transannular Diels–Alder reaction is an...Ch. 16 - Draw a stepwise mechanism for the following...Ch. 16 - Draw the products of each reaction. Indicate the...Ch. 16 - Prob. 16.62PCh. 16 - Prob. 16.63PCh. 16 - Prob. 16.64PCh. 16 - 16.65 The treatment of isoprene with one...Ch. 16 - 16.66 The treatment of with forms B (molecular...Ch. 16 - Rank the following compounds in the order of...Ch. 16 - Prob. 16.68PCh. 16 - Prob. 16.69PCh. 16 - Prob. 16.70PCh. 16 - Prob. 16.71PCh. 16 - Prob. 16.72PCh. 16 - Prob. 16.73PCh. 16 - Prob. 16.74P
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- Predict products of each Diels-Alder reaction (including stereochemistry)arrow_forwardCompounds A and B are isomers having molecular formula C5H12. Heating A with Cl2 gives a single product of monohalogenation, whereas heating B under the same conditions forms three constitutional isomers. What are thestructures of A and B?arrow_forwardShow that the [4 + 2] Diels–Alder reaction is photochemically forbidden.Parrow_forward
- A transannular Diels–Alder reaction is an intramolecular reaction that occurs when the diene and dienophile are contained in one ring, resulting in the formation of a tricyclic ring system. Draw the product formed when the following triene undergoes a transannular Diels–Alder reaction.arrow_forwardThe following triene undergoes an intramolecular Diels-Alder reaction to give a bicyclic product. Propose a structural formula for the product. Account for the observation that the Diels-Alder reaction given in this problem takes place under milder conditions (at lower temperature) than the analogous Diels-Alder reaction shown in Problem 20.34.arrow_forward-Ocimene is a pleasant-smelling hydrocarbon found in the leaves of certain herbs. It has the molecular formula C10H16 and a UV absorption maximum at 232 nm. On hydrogenation with a palladium catalyst, 2,6-dimethyloctane is obtained. Ozonolysis of -ocimene, followed by treatment with zinc and acetic acid, produces the following four fragments: (a) How many double bonds does -ocimene have? (b) Is -ocimene conjugated or nonconjugated? (c) Propose a structure for -ocimene. (d) Write the reactions, showing starting material and products.arrow_forward
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