Reaction of Furan and Thiophene
Reaction of Furan and Thiophene
Reaction of Furan and Thiophene
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3) Halogenation<br />
NBS<br />
S<br />
S<br />
Br<br />
X<br />
X<br />
O<br />
X 2 / r.t<br />
x= Clor Br<br />
X<br />
O<br />
X<br />
Cl 2 / CH 2 Cl 2<br />
- 40 C°<br />
Br 2 / Dioxane<br />
O<br />
Cl<br />
0 C ° O Br<br />
Indirect insertion <strong>of</strong> iodine in furan ring<br />
I 2 / KI<br />
O<br />
COOH<br />
KOH<br />
O I<br />
Heterocyclic Chemistry
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