=Nz:N=Characterize the following compound as:A. AromaticB. AntiaromaticC. NonaromaticD. Not enough information

There are 4 criteria in which a molecule must meet in order for it to be aromatic. The same is also…

Answered: =N z: N= Characterize the following…

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.40P

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INSTRUCTIONS: Choose the letter of the BEST answer for each item. 1. How many lone pairs are involved in sustaining the conjugation of pyridine? A. One B. Two C. Three D. Four 2. Benzopyrene, naphthalene and pyrene are members of these group of aromatic compounds: A. Benzenoid aromatic compounds B. Non-benzenoid aromatic compounds C. Heterocyclic aromatic compounds D. Heteronuclear compounds 3. What type of aromatic compound is pyridine? A. Heterocyclic aromatic compound B. Benzenoid aromatic compound C. Non-benzenoid aromatic compound D. Homonuclear cyclic compound 4. What property of aromatic rings prevent the involvement of the conjugated structure to addition reactions? A. Radical stabilization B. Resonance stability C. Inductive effect D. Aromatic effect 5. Which electrophilic aromatic substitution reaction is described when aniline is transformed into para-aminotolouene? A. Nitration B. Friedel Crafts alkylation C. Oxidation D. Halogenation 6. What type of relationship does…
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59. Bond Strength I. Cyclobutane II. Cyclopentane 60. Optical Rotation I. 70% R, 30% S 11.30% R, 70% S 61. Which of the following is/ are alternant aromatic compounds? A. benzene B. naphthalene C. anthracene D. all of the given choices 62. Which of the following is/ are not aromatic? A. Cyclobutadiene B. Cyclopentadiene C. Cyclohexadiene D. All of the given choices 63. The following can exhibit tautomerism EXCEPT: A. benzaldehyde B. ethanal C. Cyclohexane carbaldehyde D. Cyclohexanone 64. Which of the following substituents exhibits both - inductive effect and - Resonance effect when attached to the benzene ring? A. -OH B. -CI D. -NO2 D.-CH3 65. Alkyl groups if attached to halogen (example: tert-butyl bromide) would exhibit A. negative inductive effect B. positive inductive effect C. negative resonance effect D. positive resonance effect. 9
Which of the following pair is correct to identify the molecule? a.)acetophenone: methyl phenyl ketone b.)2-pentanone: methyl propyl ketone c.)propanone: acetone d.)diphenyl ketone: benzophenone
2. Which structure is NOT aromatic? a d. H3C :Br: DO
17) Which of the following compounds is Aromatic он I II III IV A. I and III В. П and III C. II and IV D. I and IV 18) Which of the following is the least reactive for the electrophilic substitution? A. Toluene B. Fluorobenzene C. Aniline D. Benzene 19) Follow the reaction path and identify the Products X and Y. Benzene + Acetyl chloride AICI:, H2/Pd, Y A. X: Acetophenone B. X: Chlorobenzene C. X: Acetophenone D. X: Acetophenone Y: Acetylhexane Y: Chlorohexane Y: Ethylbenzene Y: Benzoic acid 20) Identify the product (D) in the following reaction B A C NO2 FeBrs + Br, D A. o-Chloronitrobenzene C. A and B B. p-Chloronitrobenzene D. m-Chloronitrobenzene 21) Identify the missing reagents Br `NO2 А. 1: Brz, FeBrs B. 1: HNO3, H2SO4 2: Br2, FeBr3 D. 1: HNO2, H2SO4 2: HBr 2: HNO2, H2SO4 C..1: NBS 2: HNO2, H2SO4
1. Classify the following if either Aromatic or Not aromatic a. a b. + d. e. ZI H₂

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=N z: N= Characterize the following compound as: A. Aromatic B. Antiaromatic C. Nonaromatic D. Not enough information