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KCET 2016 Chemistry Solved Paper
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Question : 16
Total: 60
IUPAC name of the compound
1 -Bromo but-2-ene
Bromo butene
2-Bromo-2-butene
1-Bromo but-3-ene
Validate
Solution:
The IUPAC name of the given compounds,
4
C
H
3
−
3
C
H
=
2
C
H
−
1
C
H
2
−
B
r
is 1-bromobut-2-ene. If the numbering of the carbon atoms starts from bromide attached carbon,that is
1
C
H
3
−
2
C
H
=
3
C
H
−
4
C
H
2
−
B
r
, the numbering will be incorrect order of numbering because, functional groups are not getting least number.
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