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CHM 2120

Exam II

TermDefinition
In order for a ring to exhibit aromatic stability, the 6 π bonds participating in the ring must be what? delocalized
What does delocalized electrons mean? the electrons can participate in resonance
What does localized electrons mean? the electrons cannot participate in resonance
What are the requirements Huchel's Rule states a ring must have to exhibit aromatic stability? conjugated π bonds; cyclic; trigonal planar atoms, (4n+2) π electrons or non-bonding electrons
Can ions exhibit aromatic stability? yes
What does aromatic stability of a conjugate base do to the acid? it makes it much more acidic than you would have expected
A structure is aromatic if... 1. fully conjugated ring with overlapping p-orbitals 2. meet Huchel's Rule: (4n+2) π electrons
A structure is antiaromatic if... 1. fully conjugated ring with overlapping p-orbitals 2. has 4n π electrons
A structure is non-aromatic if... 1. not a fully conjugated ring
Say you put benzene through an acylation reaction. Then, the product undergoes a Clemingson reduction. What reagents were used to due this reduction? Zn(Hg), HCl, heat
What reaction contains these reagents: Zn(Hg), HCl, heat Clemingson reduction
If you want to reduce nitrobenzene into aniline, what reagents are required? 1)Zn, HCl 2)NaOH
You are given butylbenzene and the following reagents: 1) KMnO4, H2O, heat 2) H3O+ benzoic acid
What reagents would produce benzoic acid from propylbenzene? 1) KMnO4, H2O, heat 2) H3O+
True or false: benzylic halides undergo SN1 very rapidly. true
Why do benzylic halides undergo SN1 very rapidly? benzylic halides are stabilized by the many resonance forms of the carbocation.
Elimination reactions can occur with benzylic halides. Would E1 or E2 be occurring if the following reagent is present: concentrated H2SO4. E2
Elimination reactions can occur with benzylic halides. Would E1 or E2 be occurring if the following reagent is present: NaOEt E1
Created by: gracelisabethxo
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