Rationalised 2023-24
221
Alcohols, Phenols and Ethers
7 12
Predict the products of the following reactions:
3
2
2
3
CH
CH
CH
O – CH
HBr
−
−
−
+
→
CH
C
OC H
HI
3
3
2
5
(
)
−

→

(iii)
(ii)
(iv)
Alcohols and phenols are classified (i) on the basis of the number of hydroxyl
groups and (ii) according to the hybridisation of the carbon atom, sp
3 or sp
2 to
which the –OH group is attached Ethers are classified on the basis of groups
attached to the oxygen atom Alcohols may be prepared (1) by hydration of alkenes (i) in presence of an
acid and (ii) by hydroboration-oxidation reaction (2) from carbonyl compounds by
(i) catalytic reduction and (ii) the action of Grignard reagents