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aromatic is any ________ system
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unusually stable ring
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aromatics are cyclic, ________ polyenes that have 4n +2 pi electr
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conjugated
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aliphatic are all compounds that?
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are not aromatic
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t or f
aromatic comp need to be planar
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t
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huckels rule
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4n+2 Pi electrons
n can be any nonneg integ
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t or f
neutr comp, anions, and cations can all be aromatic
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t
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antiaromatic is a?
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cyclic conjug polyene that has 4n electr.
its destabl
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a cyclic conj polyene that has 4n elect is?
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destabilized
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toluene is?
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a benzene ring with ch3 attached
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phenol is
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a benzene ring with an oh gr
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aniline is?
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benzene with NH2 attached
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anisole is?
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benzene with OCH3 attach
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benzene with OCH3 attach is?
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anisole
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benzene with CH3 attach is?
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toluene
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aromatic compd are called?
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aryl, or arenes
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Ar represents?
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aromatic comp
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aliphatic comp are called?
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alkyl
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aliphatic comp are repres by?
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R
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when the benzene gr is a subst its called?
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phenyl group
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a toluent molec subst at methyl posit is?
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benzyl
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benzyl refers to?
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a toluene molec subst at methyl posit
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susbst benzene rings
1,2 disubst is called?
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ortho
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benezene
1,3 disubst is called
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meta, m
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benzene
1,4 disubst comp is called?
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para,p
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name 4 examples of polycyclic and heterocyclic aromatic compd
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napthalene
anthracene
pyridine
pyrrole
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pyridine
the nonbond electr pair of the n is in a nitrog __________ orbital
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sp2
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pyridine
the nonbond electr pair of the N is in an sp2 orbital that is oriented how ?
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perp to the p orbitals around the ring and is not involv in the conjug pi system
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pyridine is
acidic
basic
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pyrid is basic
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T or F
pyrrole is acidic
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T
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Pyrrole
the lone pair onthe pyrrole nitrogen is locked into?
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ring struct
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T or F
the phys prop of arom comp are simil to oth hydrocarbons
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t
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aromaticity greatly affects the ____________ prop
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chemic
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benzene
the rings six pi orbit overlap to ?
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delocal the electr density
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benzene
all six c are ______________ hybridized
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sp2
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the delocal electrons form a
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"pi electr cloud"
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benzene
the pi electr clouds are locat?
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above and below the ring
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benzene is relativ?
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unreact
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most imp react of aromatic comp is?
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electroph aromatic subst
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electr aromatic subst
an electrophile replaces a?
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proton to prod a subst aromatic compd
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most common examples of electrophilic arom subst?
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halogenation
sulfonation
nitration
acylation
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electr aromat subst
halogenation
arom ring react with _____________ in presence of __________
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br, cl
in pres of lewis acid like FeCL3, FeBr3, AlCl3
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Name 3 lewis acids
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FeCl3, FeBr3, AlCl3
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FeCl3, FeBr3, and AlCl3 are all?
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lewis acids
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Elec ar sub
why is react w fl and I not useful?
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fl - multisubst
I- not react enough, needs spec condit
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elect ar sub
halogenation
react with I needs?
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special conditions
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bezene + Br2 ----> monosubst benzene ring
what are reagents?
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FeBr3, heat
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electr arom subst
Sulfonation
what are reagents?
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fuming sulfuric acid (SO3/H2SO4)
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SO3 is?
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sulfor trioxide
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H2SO4 is
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sulfuric acid
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benzene --------> sulfonic acid
what are reagents?
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SO3/H2SO4, heat
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