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Class 12 NEET Chemistry Organic Compounds Containing Nitrogen
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Question : 40
Total: 51
Intermediates formed during reaction of
R
CONH
2
with
Br
2
and
KOH
are
(2001)
R
CONHBr
and
R
NCO
R
NHCOBr
and
R
NCO
R
NH
−
Br
and
RCONHBr
R
CONBr
2
Validate
Solution:
The reaction,
R
CONH
2
+
Br
2
+
KOH
→
R
NH
2
is known as Hoffmann-bromamide reaction.
The mechanism of the reaction is
This reaction is used to descent the series, i.e., for preparing a lower homologue from a higher one.
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