Organic Chemistry
12th Edition
ISBN: 9781118875766
Author: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter FRP, Problem 24P
Dehydrohalogenation of meso-1, 2-dibromo-1, 2-diphenylethane by the action of sodium ethoxide in ethanol yields (E)-1-bromo-1-2-diphenylechene. Similar dehydrohalogenation of either enantiomer of 1, 2-dibromo-1, 2-diphenylechane yields (Z)-1-bromo-1, 2-diphenylethene. Provide an explanation for the results.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2 CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under the same conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C. Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structures of A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions.
When it is treated with sodium ethoxide in deuterated ethanol (C2H5OD), cyclopentadiene exchanges all of its hydrogens for deuterium.
Draw a structure for the intermediate in this reaction with all protons (no deuterons).
Reaction of HBr with 3-methylcyclohexene yields a mixture of four products: cis-and trans-1-bromo-3-methylcyclohexane and cis-and trans-1-bromo-2-methylcyclohexane. The analogous reaction of HBr with 3-bromocyclohexene yields trans-1, 2-dibromocyclohexane as the soleproduct. Draw structures of the possible intermediates, and then explain why only a single product is formed in this reaction.
Chapter FRP Solutions
Organic Chemistry
Ch. FRP - Prob. 1PCh. FRP - 2. Which member of these pairs is the more polar?...Ch. FRP - Prob. 3PCh. FRP - Describe how solubility could be used to...Ch. FRP - 5. Though they each contain only one type of...Ch. FRP - Predict the products from each of the following...Ch. FRP - Prob. 7PCh. FRP - Prob. 8PCh. FRP - Prob. 9PCh. FRP - Prob. 10P
Ch. FRP - Predict the products from each of the following...Ch. FRP - Prob. 12PCh. FRP - 13. Starting with propyne and using any other...Ch. FRP - Bromination of 2-methylbutane yields predominantly...Ch. FRP - Prob. 15PCh. FRP - Account for the following observations with...Ch. FRP - Prob. 17PCh. FRP - Prob. 18PCh. FRP - Heating 1, 1,1-triphenylmethanol with ethanol...Ch. FRP - (a) Which of the following halides would you...Ch. FRP - An alkane (A) with the formula C6H14 reacts with...Ch. FRP - Prob. 22PCh. FRP - Prob. 23PCh. FRP - Dehydrohalogenation of meso-1, 2-dibromo-1,...Ch. FRP - Prob. 25PCh. FRP - Prob. 26PCh. FRP - 27. (R)-3-Methyl-1-pentene is treated separately...Ch. FRP - Prob. 28PCh. FRP - Prob. 29PCh. FRP - Prob. 30PCh. FRP - Prob. 31PCh. FRP - Synthesize the following compound by a method that...Ch. FRP - Provide three methods that employ Grignard...Ch. FRP - 34. Compound Yexhibits one NMR signal at (a...Ch. FRP - Prob. 35PCh. FRP - 36. Compound X shows a strong IR absorption band...Ch. FRP - Prob. 37PCh. FRP - 38. In addition to more highly fluorinated...Ch. FRP - Fluorination of (R)-2-flurobutane yields a mixture...Ch. FRP - Prob. 40PCh. FRP - Prob. 41P
Additional Science Textbook Solutions
Find more solutions based on key concepts
Calculate the lattice energy of CaCl2 using a Born-Haber cycle and data from Appendices F and L and Table 7.5. ...
Chemistry & Chemical Reactivity
Draw a Lewis structure for each molecule and determine its molecular geometry. What kind of intermolecular forc...
Introductory Chemistry (5th Edition) (Standalone Book)
A compound that contains only C and H was burned in excess O2 to give CO2 and H2O. When 0.270 g of the compound...
General Chemistry: Atoms First
a. Which compound has the stretching vibration for its carbonyl group at the highest frequency: acetyl chloride...
Organic Chemistry (8th Edition)
1.1 Write a one-sentence definition for each of the following:
a. chemistry
b. chemical
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
64. Determine the [H3O+] and pH of a 0.200 M solution of formic acid.
Chemistry: A Molecular Approach (4th Edition)
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
- -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_forwardDehydrohalogenation 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.arrow_forwardThe Wittig reaction can be used for the synthesis of conjugated dienes, as, for example, 1-phenyl-1,3-pentadiene. -CH=CHCH CHCH, 1-Phenyl-1,3-pentadiene Propose two sets of reagents that might be combined in a Wittig reaction to give this conjugated diene.arrow_forward
- 4.35 Formulate the reaction of cyclohexene with (i) Br2 and (ii) meta-chloro- peroxybenzoic acid followed by H30+. Show the reaction intermediates and the final products with correct cis or trans stereochemistry. 4.36 What products would you expect to obtain from reaction of cyclohexa- 1,3-diene with each of the following? (a) 1 mol Br2 in CH2C12 (c) 1 mol DCl (D = deuterium, ²H) (b) 1 mol HCl (d) 2 mol H2 over a Pd catalyst 4.37 Predict the products of the following reactions on hex-1-yne: (a) 1 equiv HBr ? (b) 1 equiv Cl2 ? (c) H2, Lindlar catalystarrow_forward2-Methoxy-2-methylpropane on heating with HBr gives : A 2-Methylpropan-2-ol and Bromomethane Methanol and 2-Bromo-2-methylpropane (C) 2-Methylpropan-1-ol and bromomethane D Methoxymethane and Propylbromidearrow_forwardA chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactionsarrow_forward
- cis-1-Bromo-4-tert-butylcyclohexane and trans-1-bromo-4-tert-butylcyclohexane both react with sodium ethoxide in ethanol to form 4-tert-butylcyclohexene. Explain why the cis isomer reacts much more rapidly than the trans isomer.arrow_forwardThe reaction of (2S)-2-chloro-3-methylpentane with sodium iodide yields two products: (2R)-2-iodo-3-methylpentane and racemic 3-iodo-2-methylpentane. Account for the formation of each of these two products. For each product, you should show how it is formed and what that tells you about the mechanism of that specific reaction.arrow_forwardGive the SN2 product(s) for the reaction of (R)-2-bromopentane with an excess of sodium methoxide. (R)-2-methoxypentane (S)-2-methoxypentane (S)-2-ethoxypentane (R)-2-ethoxypentane (R)-2-pentanol O(S)-2-pentanolarrow_forward
- Addition of HBr to allene (CH2 = C = CH2) forms 2-bromoprop-1-ene rather than 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed from an allylic carbocation. Considering the arrangement of orbitals in the allene reactant, explain this result.arrow_forwardAddition of HBr to allene (CH2=C=CH2) forms 2-bromoprop-1-ene rather than 3-bromoprop-1-ene, even though 3-bromoprop-1-ene is formed from an allylic carbocation. Considering the arrangement of orbitals in the allene reactant, explain this result.arrow_forwardThe electrophilic addition of HBr to 3-cyclohexylbut-1-ene gives a mixture of two constitutional isomers. These two isomers can also be produced from 3-cylcohexybut-2-ene, but one of which requires different reaction conditions; the electrophilic addition of HBr to 3-cylcohexybut-2-ene produces one of these isomers while the electrophilic addition of HBr to 3-cylcohexybut-2-ene, in the presence of peroxides, produces the other one. Draw the structure for the isomer product that can result from the reactants 3-cyclohexylbut-1-ene and 3-cylcohexybut-2-ene using different reaction conditions. Part 1 of 2 Click and drag to start drawing a structure. C 8 DY 000 8: >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
Alcohols, Ethers, and Epoxides: Crash Course Organic Chemistry #24; Author: Crash Course;https://www.youtube.com/watch?v=j04zMFwDeDU;License: Standard YouTube License, CC-BY