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28 Cards in this Set
- Front
- Back
sn2 avoids forming a?
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carbocation
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SN2 is a ?
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bimolecular nucleophilic substitution
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describe an SN2 reaction?
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nucleophile pushes its way into a compound while displ the leaving group
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how many rate determ steps does SN2 have?
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one
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SN2 the rate determ step involves?
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2 molecules.
substrate and nucleophile |
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for SN2 you need a strong __________________?
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nucleophile
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t or f
a transition state really exists? |
false
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an intermediate is a?
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well defined species with a finite lifetime
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which is real and actually exists?
a. intermediate b. transition state |
an intermediate
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For SN2 the reactant can not be?
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sterically hindered
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when the nucleoph attacks the react from the backside what is formed?
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a trigonal bipyramidal trans state
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SN2 follows _____________ kinetics
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second order
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the rate of SN2 react dep on the concentr of?
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2 reactants
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what things do you have to take into account for SN1 vers SN2?
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1. sterics
2. nucl str 3. leav gr ability 4. react condit 5. solv effects |
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sn1 vers sn2
when you see H+ above the arrow think of? |
cationic mech like Sn1
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Sn1 has a ____________ intermed
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trigonal planar
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Sn1 vers sn2
the carbocation is chiral or achiral? |
achiral
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Sn1 res in a _______________ of optical activ
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loss of
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Sn1 will turn an optically active comp into a?
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racemic mixture
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sn2 has a ______________ transition state
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chiral
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what does an sn2 do to the chirality of a compound?
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it flips it.
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a polar aprotic solvent favors?
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SN2
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1>2>3 is favored in ?
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sn2
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3>2>1 is favored in ?
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sn1
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sn1 rate=
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k[RX]
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sn2 rate=
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k[Nu][RX}
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SN2 do what to optical activ?
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it will cause an inversion of configuration
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Bulky nucleophiles favor?
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sn1
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