Exercício de Química Sintética e Organica Mista (323)

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B-10. The major product of the reaction
is
(a) (b)
(c) An equal mixture of compound (a) and (b) would form.
(d ) None of these; substitution would not occur.
B-11. What is the product of the following reaction?
(a) (d )
(b) (e)
(c)
B-12. Partial rate factors are shown for nitration of a particular aromatic compound. Based on these
data, the most reasonable choice for substituent X is:
(a) GN(CH3)2 (c) GBr (e)
(b) GSO3H (d ) GCH(CH3)2
B-13. Which reactants combine to give the species shown at the right as a reactive intermediate?
(a) Benzene, isopropyl bromide, and HBr
(b) Bromobenzene, isopropyl chloride, and AlCl3
(c) Isopropylbenzene, Br2, and FeBr3
(d ) Isopropylbenzene, Br2, light, and heat
(e) Isopropylbenzene, N-bromosuccinimide, benzoyl peroxide, and heat
H
CH(CH3)2
H
HH
H Br
�
CH O
X
0.003
0.001
0.1
0.003
0.001
OCH3(CH3)2CH
C
CH3
CH3
OCH3CHCH2
CH3
OCH3
OCH3
(CH3)2CHCHCH2
CH3
OCH3
C CH2
CH3
�OCH3
H2SO4
S
Br
S Br
S
?
Br2
FeBr3
318 REACTIONS OF ARENES: ELECTROPHILIC AROMATIC SUBSTITUTION