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The chemoselectivity
1.
The chemoselectivity
2.
The selectivity • Thisquestion
arises from presence of more than one functional group.
3.
The chemoselectivity • It
is matter of reactivity ….
4.
The chemoselectivity • Which
is more reactive ??
5.
The chemoselectivity
6.
The chemoselectivity
7.
The chemoselectivity
8.
Dianions • Last formed
, react first ???? 16 25
9.
Protecting groups
10.
Protecting groups
11.
Protecting groups
12.
Protecting groups
13.
Oxidizing agents • Oxidation
of primary alcohols
14.
Oxidizing agents • Oxidation
of primary alcohols • Dess – Martin oxidation • Swern oxidation
15.
Oxidizing agents • Oxidation
of secondary alcohols to acids • Cr (VI) and Mn (VII) still the preferred agents.
16.
Think bout it
?
17.
Think about it
?
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