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Organic Reaction Mechanisms II: Electrophilic and Radical Reactions
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Hydroboration, oxymercuration, halohydrin formation
NEET level
Single correct option
Difficulty 1 of 3
o2168
Ethene reacts with
Br
X
2
in water to give mainly
A
1,2-dibromoethane
B
2-bromoethanol
C
bromoethane
D
ethane-1,2-diol
Answer: B
The bromonium ion is opened by the solvent water, which is present in large excess. The product is the halohydrin
BrCH
X
2
CH
X
2
OH
, 2-bromoethanol.
Practice Organic Reaction Mechanisms II: Electrophilic and Radical Reactions
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