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
Videos
Textbook Question
Chapter 21, Problem 21.12P
Following each name is the number of Kekulé structures that can be drawn for it. Draw these Kekulé structures and show, using curved arrows, how the first contributing structure for each molecule is converted to the second and so forth.
- (a) Naphthalene (3)
- (b) Phenanthrene (5)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Show the chemical reaction on how to convert cyclopentene into these compounds. (a) 1,2-dimethylcyclopropane (b) Cyclopentanol (c) Iodocyclopentane (d) Cyclopentane.
Biphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?(b) How many pi electrons are there in the two aromatic rings of biphenyl? How does this number compare with that for naphthalene?(c) The heat of hydrogenation for biphenyl is about 418 kJ>mol (100 kcal>mol). Calculate theresonance energy of biphenyl.(d) Compare the resonance energy of biphenyl with that of naphthalene and with that of two benzene rings. Explain thedifference in the resonance energies of naphthalene and biphenyl.
(i) State reagents G and J.
(ii) Draw the structural formula for compounds D, E and H.
Chapter 21 Solutions
Organic Chemistry
Ch. 21.2 - Construct a Frost circle for a planar...Ch. 21.2 - Which compound gives a signal in the 1H-NMR...Ch. 21.2 - Prob. 21.3PCh. 21.2 - Prob. 21.4PCh. 21.3 - Prob. 21.5PCh. 21.4 - Arrange these compounds in order of increasing...Ch. 21.4 - Prob. AQCh. 21.4 - Prob. BQCh. 21.4 - Prob. CQCh. 21.5 - Prob. 21.7P
Ch. 21 - Name the following compounds and ions.Ch. 21 - Prob. 21.9PCh. 21 - Draw a structural formula for each compound. (a)...Ch. 21 - Molecules of 6,6-dinitrobiphenyl-2,2-dicarboxylic...Ch. 21 - Following each name is the number of Kekul...Ch. 21 - Prob. 21.13PCh. 21 - Prob. 21.14PCh. 21 - Prob. 21.15PCh. 21 - Which of the molecules and ions given in Problem...Ch. 21 - Prob. 21.17PCh. 21 - Naphthalene and azulene are constitutional isomers...Ch. 21 - Prob. 21.19PCh. 21 - Prob. 21.20PCh. 21 - Following are IR and 1H-NMR spectra of compound D....Ch. 21 - Compound E (C8H10O2) is a neutral solid. Its mass...Ch. 21 - Following are 1H-NMR and 13C-NMR spectral data for...Ch. 21 - Following are 1H-NMR and 13C-NMR spectral data for...Ch. 21 - Compound H (C8H6O3) gives a precipitate when...Ch. 21 - Compound I (C11H14O2) is insoluble in water,...Ch. 21 - Propose a structural formula for compound J...Ch. 21 - Propose a structural formula for the analgesic...Ch. 21 - Prob. 21.29PCh. 21 - Prob. 21.30PCh. 21 - Given here are 1H-NMR and 13C-NMR spectral data...Ch. 21 - Prob. 21.32PCh. 21 - Prob. 21.33PCh. 21 - Prob. 21.34PCh. 21 - Arrange the molecules and ions in each set in...Ch. 21 - Prob. 21.36PCh. 21 - Prob. 21.37PCh. 21 - From each pair, select the stronger base.Ch. 21 - Prob. 21.39PCh. 21 - Prob. 21.40PCh. 21 - Prob. 21.41PCh. 21 - Prob. 21.42PCh. 21 - Following is an equation for iodination of...Ch. 21 - Prob. 21.44PCh. 21 - Prob. 21.45PCh. 21 - Prob. 21.46PCh. 21 - When warmed in dilute sulfuric acid,...Ch. 21 - In the chemical synthesis of DNA and RNA, hydroxyl...Ch. 21 - Prob. 21.49PCh. 21 - Write the products of the following sequences of...Ch. 21 - Prob. 21.51PCh. 21 - Show how to convert 1-phenylpropane into the...Ch. 21 - Prob. 21.53PCh. 21 - Cromolyn sodium, developed in the 1960s, has been...Ch. 21 - Prob. 21.55PCh. 21 - Prob. 21.56PCh. 21 - Prob. 21.57PCh. 21 - Prob. 21.58PCh. 21 - Prob. 21.59PCh. 21 - Prob. 21.60PCh. 21 - Prob. 21.61PCh. 21 - Prob. 21.62PCh. 21 - Prob. 21.63PCh. 21 - Following is a synthesis for toremifene, a...
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
- (a) Draw the structure of the following :(i) p-Methylbenzaldehyde (ii) 4-Methylpent-3-en-2-one(b) Give chemical tests to distinguish between the following pairs of compounds :(i) Benzoic acid and Ethyl benzoate, (ii) Benzaldehyde and Acetophenone.(iii) Phenol and Benzoic acid.arrow_forwardGive the systematic (IUPAC) names of the following alkenes. (а) СH— CH— CH— CH(CH3)2 (b) CH3(CH2)3¬C-CH2CH3 CH2 (c) CH2=CH-CH,–CH=CH2 (d) CH, —С—CH—CH—СH, CH3 (е) (f) (g) CH3 CH2 CH3 (h) .CH3 (j)arrow_forwardBiphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?(b) How many pi electrons are there in the two aromatic rings of biphenyl? How does this number compare with that for naphthalene?arrow_forward
- and (ii) KMnO4 in aqueous NaOH: 1. Name the following alkenes, and predict the products of their reaction with (i) KMnO4 in aqueous acid (a) (b) 2. Draw structures corresponding to the following IUPAC names: (a) 3-Ethylhept-1-yne (b) 3,5-Dimethylhex-4-en-1-yne (c) Hepta-1,5-diyne (d) 1-Methylcyclopenta-1,3-diene (1) 3. Draw and name all the possible pentyne isomers, C5H8. H H Ç-H [ Pent-1-yne] (2) 4. Predict the products of the following ring is inert to all the indicated reagents.) 4 H 4- (3) 4-C C = C-4 [3-methylbut -1-4 [Pent-2-yhdioselectivity where relevant. (The aromatic CH=CH2 Styrene (a) Styrene+H2 Pd, ? (c) Styrene+HBr ? (b) Styrene+Br2 → ? (d) Styrene+KMnO4 NaOH, H2O ? 5. Suggest structures for alkenes that give the following reaction products. There may be more than one answer for some cases. HyPd catalyst (a) ? Br₂ in CH2Cl2 (b) ? HBr (c) ? 2-Methylhexane 2,3-Dibromo-5-methylhexane 2-Bromo-3-methylheptane CH3 HO OH CH3CHCH2CHCHCH2CH3 KMnO4OH (d) ? H₂Oarrow_forwardStarting from bromoethane, the formation of which of the following compound requires more than one step of reaction? 2 (a) Methoxyethane (b) Ethanol (c) Ethanoic acid (d) Ethenearrow_forwardFor each pair of compounds, predict which compound has a higher boiling point. then explain why that compound has a higher boiling point. (a) isopropyl bromide and n-butyl bromide (b) isopropyl chloride and tert-butyl bromide (c) 1-bromobutane and 1-chlorobutanearrow_forward
- 5. (a) Compound A with molecular formula C7H8 is produced when benzene reacts with chloromethane in AICI3. When A is treated with acidic KMNO4 solution, compound B is formed. When A is treated with conc. HN0; in conc. H2SO4, a yellowish oil solution, C is formed. Draw the molecular structure of A, B and C and write an equation for the formation of A from benzene.arrow_forwardDraw a structural formula of an alkene that undergoes acid-catalyzed hydration to give each alcohol as the major product (more than one alkene may give each alcohol as the major product). (a) 3-Hexanol (b) 1-Methylcyclobutanol (c) 2-Methyl-2-butanol (d) 2-Propanolarrow_forwardGive reasons for the following :(i) Phenol is more acidic than methanol.(ii) The C—O—H bond angle in alcohols is slightly less than the tetrahedral angle (190°28′).(iii) (CH3)3C—O—CH3 on reaction with HI gives (CH3)3C—I and CH3—OH as the main products and not (CH3)3C—OH and CH3—I.arrow_forward
- (a) When a compound containing C, H, and O is completelycombusted in air, what reactant besides the hydrocarbonis involved in the reaction?arrow_forwardIn each pair of compounds, select the one with the higher boiling point. (a) Acetaldehyde or ethanol (b) Acetone or 3-pentanone (c) Butanal or butane (d) Butanone or 2-butanolarrow_forwarda) Give the chemical structure for each of the following compound: (i) 4-hydroxybenzoic acid (ii) 2-hexene (iii) chlorocyclohexane (iv) 2,5-dichloroheptane b) Prostaglandin are a group of C20 lipids and can be found in small amounts in all body tissues and fluids. (1) Put an asterisk on all the chiral carbon(s) present in the chemical structure of prostaglandin E. (II) Do you expect prostaglandin to be acidic or basic? (III) Circle the functional group that is responsible for the acidity / basicity. ali se odno HO OH HO Prostaglandin Earrow_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
07 Physical Properties of Organic Compounds; Author: Mindset;https://www.youtube.com/watch?v=UjlSgwq4w6U;License: Standard YouTube License, CC-BY