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9.5 Assign names to each of the following amines:

a.

b. [tex]$CH_3 - NH - CH_2 - CH_3$[/tex]

c. [tex]$\left(CH_3 CH_2\right)_3 N$[/tex]

d.

e. [tex]$CH_3 CH_2 CH_2 - NH_2$[/tex]

f.

Sagot :

GinnyAnswer
Let's name each of the given amines step-by-step.

b. [tex]\( CH_3 - NH - CH_2 - CH_3 \)[/tex]

1. Identify the longest carbon chain attached to the nitrogen. Here, we have an ethyl group ([tex]\(CH_2-CH_3\)[/tex]) and a methyl group ([tex]\(CH_3\)[/tex]).
2. Combine the alkyl groups alphabetically and add the suffix "amine".
3. The name of this amine is N-methylethanamine.

c. [tex]\( \left( CH_3 CH_2 \right)_3 N \)[/tex]

1. Here, three ethyl groups are attached to the nitrogen atom.
2. When nitrogen is bonded to three identical alkyl groups, the prefix "tri-" is used in naming.
3. The name of this amine is triethylamine.

e. [tex]\( CH_3 CH_2 CH_2 - NH_2 \)[/tex]

1. Identify the longest carbon chain, which in this case is a three-carbon chain (propane).
2. Replace the "e" in "propane" with "amine" to indicate the presence of the amino group.
3. The name of this amine is propan-1-amine.

So:
a. [awaiting structure]
b. N-methylethanamine
c. triethylamine
d. [awaiting structure]
e. propan-1-amine
f. [awaiting structure]

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