Interpretation:
To explain why a methoxy group (CH3O) increases the rate of electrophilic aromatic substitution, but decreases the rate of nucleophilic aromatic substitution
Concept introduction:
The characteristic reaction of benzene is known as electrophilic aromatic substitution reaction-a hydrogen atom is replaced by an electrophile. Because of benzene has six pi electrons that delocalized in six p-orbitals that overlap above and below the plane of the benzene ring. These loosely held pi-electrons make the benzene ring electron rich, and so it reacts with electrophiles. Moreover because of benzene's six pi electrons satisfy Huckel's rule, benzene is especially stable ring. Reactions that keep the aromatic ring intact are therefore favored. A substituent in the benzene can affect the electrophilic aromatic substitution.
Want to see the full answer?
Check out a sample textbook solutionChapter 18 Solutions
Organic Chemistry
- (12) Which one of the following statements about fluo- rometry is FALSE? a) Fluorescence is better detected at 90 from the exci- tation direction. b) Fluorescence is typically shifted to longer wave- length from the excitation wavelength. c) For most fluorescent compounds, radiation is pro- duced by a transitionarrow_forwardDon't used Ai solutionarrow_forwardDon't used Ai solutionarrow_forward
- Don't used Ai solutionarrow_forwardIndicate the correct option.a) Graphite conducts electricity, being an isotropic materialb) Graphite is not a conductor of electricityc) Both are falsearrow_forward(f) SO: Best Lewis Structure 3 e group geometry:_ shape/molecular geometry:, (g) CF2CF2 Best Lewis Structure polarity: e group arrangement:_ shape/molecular geometry: (h) (NH4)2SO4 Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forward
- 1. Problem Set 3b Chem 141 For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the molecule is polar or non-polar (iv) (a) SeF4 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: (b) AsOBr3 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles):arrow_forward(c) SOCI Best Lewis Structure 2 e group arrangement: shape/molecular geometry:_ (d) PCls Best Lewis Structure polarity: e group geometry:_ shape/molecular geometry:_ (e) Ba(BrO2): Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forwardDon't used Ai solutionarrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning