Download Elimination Reactions

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Elimination Reactions
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In
Elimination reactions, atoms are
removed from an organic compound to
form an alkene.
Elimination
reactions are though of as
the reverse of Addition reactions.
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Modeling Elimination Reactions
Build
the following reactant
H2SO4
is a strong acid that is NOT a
reactant, it just makes the reaction
occur faster.
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Using
only the atoms you have in the
models, rearrange the atoms to form two
products. (you many need a different
number or type of bonds)
 What
did you do?
 Draw the product.
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Answer
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General equation of Elimination
Reactions forming an Alkene
Y
and Z will combine
An
alkene will be formed
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Elimination Reactions
These
reactions are useful because
alkenes are used to manufacture
many products such as:
Carpets
Clothing
Upholstery
Plastics
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Elimination Reactions of Alcohols
When
alcohols are heated with a strong
acid:
 An
alkene and water are formed
ACID
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The
acid is called a catalyst because it
speeds up the reaction but is NOT one of
the reactants.
 That
is why it is written over the arrow.
H2SO4(sulfuric
acid) is a strong acid
commonly used in elimination reactions
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Examples
Draw
the structural formulas for the
organic products that are predicted to form
in the following elimination reactions.
Assume the acid is sulfuric acid.
1-propanol
2-butanol (there are two options, show both)
+ Elimination Reactions of
Haloalkanes
When
haloalkanes are heated with a
strong base:
 An
alkene, and ionic compound and water
are formed
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Examples
Draw
the structural formulas for the
organic products that are predicted to form
in the following elimination reactions.
+ KOH
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There are two options for this
reaction. Be sure to show both.
+ NaOH