Epoxide
An
epoxide
is an
ether
in which the
oxygen
atom
is part of a ring of three or more atoms. This ring is approximately an
equilateral triangle
, i.e. its bond angles are about 60°, which puts it under strain. The strained ring makes epoxides more reactive than other ethers. A
polymer
made of epoxide units is called a
polyepoxide
or an
epoxy
. Epoxy resins are used as
adhesives
and structural materials.
Reactions
Synthesis
alkene
+
percarboxylic acid
→ epoxide +
carboxylic acid
Hydrolysis
epoxide +
acid catalyst
→ trans
glycol
Nucleophilic addition
epoxide +
nucleophile
→ open epoxide ring
Reduction
#epoxide +
lithium aluminum hydride
+
water
→
alcohol
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