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Dihydroxylation
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Chemistry
Chemical reaction
2026-10-20
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Dihydroxylation
installs hydroxyl
groups
on adjacent
alkene
carbons
.
osmium tetroxide
gives
a
syn addition
pathway through
a
cyclic osmate ester
.
Table of contents
Cyclic osmate ester
Dihydroxylation
Cyclic osmate ester
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Dihydroxylation
A
cyclic osmate ester
contains the newly formed
carbon
–
oxygen
bonds of an osmium-mediated
alkene
dihydroxylation
. Both
oxygen
atoms
attach on the same face; hydrolytic
cleavage
of
metal–
oxygen
bonds releases the
diol
.
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Chemical reaction
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Cyclic osmate ester
Dihydroxylation
Past exam of the chemistry B course of the University of Cambridge
/
2024
/
Paper 1
/
B4
/
c
/
Solution
Syn addition
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