OCHEM Exam 3 Questions With Complete Solutions
___ ___ involves the addition of H2 across an alkene in the
presence of a metal catalyst
catalytic hydrogenation
___ ___ are not soluble in the reaction medium, while ___ ___
are
Heterogeneous catalysts, homogeneous catalysts
___ ___ can be achieved with a chiral catalyst
Asymmetric hydrogenation
___ involves the addition of X2 (either Br2 or Cl2) across an
alkene
halogenation
___ nucleophilic substitution reactions are called ___ reactions.
An Sn1 mechanism is comprised of two core steps: 1) loss of a
leaving group to give a carbocation intermediate; and 2)
nucleophilic attack
unimolecular, Sn1
___ ___ are classified as ___, ___, or ___ based on the number
of alkyl groups connected to the alpha position
primary, secondary, tertiary
___ nucleophilic substitution reactions are called ___ reactions
bimolecular, Sn2
, ___ ___ contain a hydrogen atom connected directly to an
electronegative atom, while ___ ___ ___ lack such a hydrogen
atom
protic solvents, polar aprotic solvents
___ ___ are the characterized by the addition of two groups
across a double bond
addition reactions
___-___ achieves hydration of an alkene without carbocation
rearrangements
Oxymercuration-demercuration
___ reactions are characterized by the addition of H and X
across a pi bond, where X is a halogen.
hydrohalogenation
___ reactions are characterized by the addition of OH and OH
across an alkene
Dihydrixylation
___ can be used to cleave a double bond and produce two
carbonyl groups
Ozonolysis
A two-step procedure for anti dihydroxylation involves
conversion of an alkene to an ___, followed by acid-catalyzed
ring opening
epoxide
___ ___ involves the addition of H2 across an alkene in the
presence of a metal catalyst
catalytic hydrogenation
___ ___ are not soluble in the reaction medium, while ___ ___
are
Heterogeneous catalysts, homogeneous catalysts
___ ___ can be achieved with a chiral catalyst
Asymmetric hydrogenation
___ involves the addition of X2 (either Br2 or Cl2) across an
alkene
halogenation
___ nucleophilic substitution reactions are called ___ reactions.
An Sn1 mechanism is comprised of two core steps: 1) loss of a
leaving group to give a carbocation intermediate; and 2)
nucleophilic attack
unimolecular, Sn1
___ ___ are classified as ___, ___, or ___ based on the number
of alkyl groups connected to the alpha position
primary, secondary, tertiary
___ nucleophilic substitution reactions are called ___ reactions
bimolecular, Sn2
, ___ ___ contain a hydrogen atom connected directly to an
electronegative atom, while ___ ___ ___ lack such a hydrogen
atom
protic solvents, polar aprotic solvents
___ ___ are the characterized by the addition of two groups
across a double bond
addition reactions
___-___ achieves hydration of an alkene without carbocation
rearrangements
Oxymercuration-demercuration
___ reactions are characterized by the addition of H and X
across a pi bond, where X is a halogen.
hydrohalogenation
___ reactions are characterized by the addition of OH and OH
across an alkene
Dihydrixylation
___ can be used to cleave a double bond and produce two
carbonyl groups
Ozonolysis
A two-step procedure for anti dihydroxylation involves
conversion of an alkene to an ___, followed by acid-catalyzed
ring opening
epoxide
