ORGANIC CHEMISTRY-W/ACCESS >CUSTOM<
5th Edition
ISBN: 9781260014112
Author: SMITH
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 15, Problem 15.78P
Interpretation Introduction
Interpretation: A stepwise mechanism for the given reaction is to be drawn.
Concept introduction: The general steps involved in the free-radical reaction are stated below:
1. First step is initiation that involves formation of radical.
2. Second step is propagation.
3. Third step is the termination that involves the formation of stable bond.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Radical bromination of cyclohexene using NBS gives 3-bromo-1-cyclohexene. Draw the allylic radical intermediate formed during this reaction, showing both resonance structures
Propose a mechanism for the free-radical chlorination of ethane,CH3¬CH3 + Cl2 ¡hv CH3¬CH2Cl + HCl
When 1 mole of buta-1,3-diene reacts with 1 mole of HBr, both 3-bromobut-1-ene and 1-bromobut-2-ene are formed. Propose a mechanism to account for this mixture of products.
Chapter 15 Solutions
ORGANIC CHEMISTRY-W/ACCESS >CUSTOM<
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Prob. 15.4PCh. 15 - Prob. 15.5PCh. 15 - Problem 15.6 Using mechanism 15.1 as guide, write...Ch. 15 - Prob. 15.7PCh. 15 - Problem 15.8 Which bond in the each compound is...Ch. 15 - Prob. 15.9PCh. 15 - Prob. 15.10P
Ch. 15 - Prob. 15.11PCh. 15 - Prob. 15.12PCh. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Prob. 15.16PCh. 15 - Draw the products of each reaction.
a. b. c.
Ch. 15 - Draw all constitutional isomers formed when each...Ch. 15 - Draw the structure of the four allylic halides...Ch. 15 - Problem 15.20 Which compounds can be prepared in...Ch. 15 - Which CH bond is most readily cleaved in linolenic...Ch. 15 - Prob. 15.22PCh. 15 - Prob. 15.23PCh. 15 - Problem 15.24 When adds to under radical...Ch. 15 - Prob. 15.25PCh. 15 - Prob. 15.26PCh. 15 - Problem 15.27 Draw the steps of the mechanism that...Ch. 15 - Prob. 15.28PCh. 15 - Prob. 15.29PCh. 15 - Prob. 15.30PCh. 15 - Prob. 15.31PCh. 15 - Prob. 15.32PCh. 15 - Prob. 15.33PCh. 15 - Prob. 15.34PCh. 15 - 15.35 What is the major monobromination product...Ch. 15 - Prob. 15.36PCh. 15 - 15.37 What alkane is needed to make each alkyl...Ch. 15 - 15.38 Which alkyl halides can be prepared in good...Ch. 15 - Prob. 15.39PCh. 15 - 15.40 Explain why radical bromination of p-xylene...Ch. 15 - a. What product(s) (excluding stereoisomers) are...Ch. 15 - Prob. 15.42PCh. 15 - 15.43 Draw the products formed when each alkene is...Ch. 15 - 15.44 Draw all constitutional isomers formed when...Ch. 15 - 15.45 Draw the organic products formed in each...Ch. 15 - Prob. 15.46PCh. 15 - 15.47 Treatment of a hydrocarbon A (molecular...Ch. 15 - 15.48 Draw the products formed in each reaction...Ch. 15 - Prob. 15.49PCh. 15 - 15.50 Draw all the monochlorination products that...Ch. 15 - Prob. 15.51PCh. 15 - 15.52 (a) Draw the products (including...Ch. 15 - 15.53 Consider the following bromination: .
a....Ch. 15 - 15.54 Draw a stepwise mechanism for the following...Ch. 15 - Prob. 15.55PCh. 15 - Prob. 15.56PCh. 15 - 15.57 Devise a synthesis of each compound from...Ch. 15 - Prob. 15.58PCh. 15 - Prob. 15.59PCh. 15 - 15.60 Devise a synthesis of each compound using ...Ch. 15 - Prob. 15.61PCh. 15 - Prob. 15.62PCh. 15 - 15.63 As described in Section 9.16, the...Ch. 15 - 15.64 Ethers are oxidized with to form...Ch. 15 - Prob. 15.65PCh. 15 - Prob. 15.66PCh. 15 - 15.67 In cells, vitamin C exists largely as its...Ch. 15 - What monomer is needed to form each...Ch. 15 - Prob. 15.69PCh. 15 - Prob. 15.70PCh. 15 - 15.71 Draw a stepwise mechanism for the following...Ch. 15 - 15.72 As we will learn in Chapter 30, styrene...Ch. 15 - Prob. 15.73PCh. 15 - 15.74 A and B, isomers of molecular formula , are...Ch. 15 - Prob. 15.75PCh. 15 - 15.76 Draw a stepwise mechanism for the...Ch. 15 - Prob. 15.77PCh. 15 - Prob. 15.78PCh. 15 - Prob. 15.79P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Alkyl halides can be reduced to alkanes by a radical reaction with tributyltin hydride, (C4H9)3SnH, in the presence of light (hv). Propose a radical chain mechanism by which the reaction might occur. The initiation step is the light-induced homolytic cleavage of the Sn-H bond to yield a tributyltin radical.arrow_forwardBicyclo-2,5-heptadiene can be prepared in two steps from cyclopentadiene and vinyl chloride. Provide a mechanism for each step.arrow_forwarda) The radical chlorination of pentane is a poor way to prepare 1-chloropentane but radicalchlorination of neopentane, (CH3)4C, is a good way to prepare neopentyl chloride,(CH3)3CCH2Cl. Explain.b) Show the mechanism for the radical chlorination of neopentane. Illustrate homolytic bondcleavage and bond formation.arrow_forward
- Tributyltin hydride (Bu3SnH) is used synthetically to reduce alkyl halides, replacing a halogen atom with hydrogen. Free-radical initiators promote this reaction, and free-radical inhibitors are known to slow or stop it. Your job is todevelop a mechanism,arrow_forwardA student adds NBS to a solution of 1-methylcyclohexene and irradiates the mixture with a sunlamp until all the NBS has reacted. After a careful distillation, the product mixture contains two major products of formula C7H11Br. (a) Draw the resonance forms of the three possible allylic free radical intermediates.arrow_forwardPeroxides are often added to free-radical reactions as initiators because the oxygen–oxygen bond cleaves homolytically rather easily. For example, the bond-dissociation enthalpy of the O¬O bond in hydrogen peroxide (H¬O¬O¬H) is only 213 kJ>mol (51 kcal>mol). Give a mechanism for the hydrogen peroxide-initiated reaction of cyclopentane with chlorine. The BDE for HO¬Cl is 210 kJ>mol (50 kcal>mol).arrow_forward
- Following is a balanced equation for bromination of toluene. (a) Using the values for bond dissociation enthalpies given in Appendix 3, calculate H0 for this reaction. (b) Propose a pair of chain propagation steps and show that they add up to the observed reaction. (c) Calculate H0 for each chain propagation step. (d) Which propagation step is rate-determining?arrow_forwardPure (S)-2-bromo-2-fluorobutane reacts with methoxide ion in methanol to give a mixture of (S)-2-fluoro-2-methoxybutane and three fluoroalkenes.(a) Use mechanisms to show which three fluoroalkenes are formedarrow_forwardDefine the Mechanism of the Radical Addition of HBr to an Alkene ?arrow_forward
- Free radical halogenation is used to replace one or more hydrogens on an alkane with one or more halogens (either chlorine or bromine). It is a substitution reaction. A student performs a free radical bromination on 3-methyl-pentane (5.88 g) to create the desired product of 3-bromo-3-methyl-pentane. The product mix, which hopefully contains almost all 3-bromo-3-methyl-pentane, is cleaned up by passing it through a gas chromoatograph, which separates out the 3-bromo-3-methyl-pentane from any undesired products made during the reaction (undesired products are created frequently in free radical halogenation). The initial product mix weighed 9.45 g; the purified 3-bromo-3-methyl-pentane weighed 7.21 g. What is the student's percent recovery?arrow_forwardPropose a mechanism for each reaction, showing explicitly how the observed mixtures of products are formed. cyclopenta-1,3-diene + Br2 S 3,4-dibromocyclopent-1-ene + 3,5-dibromocyclopent-1-enearrow_forwardWhich is more stable - a phenyl radical, [C6H5]•, or a benzyl radical, [C6H5CH2]• - and why?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