Illustrated Glossary of Organic Chemistry
Elimination reaction:
A reaction in which a
molecule
loses atoms or
groups of atoms
, usually from adjacent atoms, almost always resulting in a new
pi bond
. An elimination reaction is the
mechanistic
reverse of an
addition reaction
.
A generalized
β-elimination reaction
.
A
β-elimination reaction
following the
E2 mechanism
in which a
β-hydrogen
is removed by
methoxide ion
(a
base
). Chloride
ion
is the
leaving group
. The
product
(
cyclohexene
) is an
alkene
.
A
β-elimination reaction
following the
E2 mechanism
in which an iodine atom is removed by a iodide
ion
(a
nucleophile
). A second iodide
ion
is the
leaving group
. The
product
(
ethylene
) is an
alkene
.
An
α
-elimination reaction in which the
α-hydrogen
of
chloroform
is removed by
tert
-butoxide ion
(a
base
). Chloride
ion
is the
leaving group
. The
product
is a
carbene
.
Related terms:
Anti-periplanar
,
syn-periplanar
,
E1 mechanism
,
E1
cb
mechanism
,
curved arrow
,
deprotonate
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