Compound A has two functional groups and it will form an oily yellow liquid when it reacts with nitrous acid. They disco

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Compound A has two functional groups and it will form an oily
yellow liquid
when it reacts with nitrous acid. They discovered that compound
B is produced
during the halogenation process of compound A. When compound B
is reacted
with nitric acid, compound C is formed. While Friedel Crafts
alkylation of
compound A produces compound D. Compound E was produced by
Friedel
Crafts acylation of compound A. This compound E reacts
positively with alkaline
iodine and 2,4-dinitrophenylhydrazine. However, it returns
negative results for
Tollens' and Benedict's tests.
(a) Illustrate the potential 13C NMR spectrum
for compound A (A has more than 6 carbons)
(b) Identify the possible structural formula of compound
A (according to the
carbon type) based on your proposed "C NMR spectrum and explain
how you got that answer.