Chem 2261 Exam 3 (Final) Questions and Answers
Correct 35
Incorrect 00
1 of 35
Definition
unsubstituted: 2 formaldehyde
monosubstituted: formaldehyde and aldehyde
cis disubstituted: formaldehyde and ketone
trans disubstituted: 2 aldehydes
trisubstituted: ketone & aldehyde
tetrasubstituted: 2 ketones
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1) O3 1) KMnO4, NaOH, H2O, heat
2) H2O 2) H3O+
with alkyne with alkene
, 1) O3 1) BH3
2) Me2S or Zn, H2O 2) H2O2, H2O, OH-
with alkene with alkyne
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2 of 35
Definition
neither markovnikov nor anti-markovnikov addition of two of the
present alkyl halide. Anti-addition, bromonium/chloronium
intermediate.
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HCl/HBr excess with alkyne MsCl, TsCl, TfCl, and pyridine
Cl2 or Br2 (excess) /CH2Cl2 (or
Cl2 or Br2/CH2Cl2 with alkene
CHCl3 or CCl4) with alkyne
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3 of 35
Term
1) OsO4, pyridine
2) NaHSO3, H2O
, with alkene
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Adds OH to both C's of broken Addition of 2 H's to an alkyne to
double bond. Syn addition create a trans alkene
Addition of 2 H's to an alkyne to Markovnikov addition of water (-OH
create a cis alkene and H) with no C+
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4 of 35
Term
MsCl, TsCl, TfCl, and pyridine
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halogenation of alkanes
SN2-like reaction that works best with
Br2 is less reactive, but more
2 and 1 degree alcohols. Is used to
selective
substitute an -OH group for an alkyl
- use Cl for faster, primary c+, and Br
halide
for more selective, tertiary c+
Correct 35
Incorrect 00
1 of 35
Definition
unsubstituted: 2 formaldehyde
monosubstituted: formaldehyde and aldehyde
cis disubstituted: formaldehyde and ketone
trans disubstituted: 2 aldehydes
trisubstituted: ketone & aldehyde
tetrasubstituted: 2 ketones
Give this one a try later!
1) O3 1) KMnO4, NaOH, H2O, heat
2) H2O 2) H3O+
with alkyne with alkene
, 1) O3 1) BH3
2) Me2S or Zn, H2O 2) H2O2, H2O, OH-
with alkene with alkyne
Don't know?
2 of 35
Definition
neither markovnikov nor anti-markovnikov addition of two of the
present alkyl halide. Anti-addition, bromonium/chloronium
intermediate.
Give this one a try later!
HCl/HBr excess with alkyne MsCl, TsCl, TfCl, and pyridine
Cl2 or Br2 (excess) /CH2Cl2 (or
Cl2 or Br2/CH2Cl2 with alkene
CHCl3 or CCl4) with alkyne
Don't know?
3 of 35
Term
1) OsO4, pyridine
2) NaHSO3, H2O
, with alkene
Give this one a try later!
Adds OH to both C's of broken Addition of 2 H's to an alkyne to
double bond. Syn addition create a trans alkene
Addition of 2 H's to an alkyne to Markovnikov addition of water (-OH
create a cis alkene and H) with no C+
Don't know?
4 of 35
Term
MsCl, TsCl, TfCl, and pyridine
Give this one a try later!
halogenation of alkanes
SN2-like reaction that works best with
Br2 is less reactive, but more
2 and 1 degree alcohols. Is used to
selective
substitute an -OH group for an alkyl
- use Cl for faster, primary c+, and Br
halide
for more selective, tertiary c+
