Exercício de Química Sintética e Organica Mista (658)

Prévia do material em texto

B-4. Which of the following arylamines will not form a diazonium salt on reaction with sodium
nitrite in hydrochloric acid?
(a) m-Ethylaniline
(b) 4-Chloro-2-nitroaniline
(c) p-Aminoacetophenone
(d ) N-Ethyl-2-methylaniline
B-5. The amines shown are isomers. Choose the one with the lowest boiling point.
(a) (b) (c) (d)
B-6. Which of the following is the strongest acid?
(a) (d)
(b) (e)
(c)
B-7. The reaction
gives as final product
(a) A primary amine
(b) A secondary amine
(c) A tertiary amine
(d) A quaternary ammonium salt
B-8. A substance is soluble in dilute aqueous HCl and has a single peak in the region 
3200–3500 cm–1 in its infrared spectrum. Which of the following best fits the data?
(a) (c)
(b) (d) CO2HNH2
NHCH3N(CH3)2
NHCH2CH3
CH3I (excess) ?�
H H
N
�
H H
N
�
N H
H
�
�
H
H
H HN
H
H
H N
NH2
NHCH3
CH3
N
H CH3
N
AMINES 653