CHXII13:AMINES
324184
The compound

forms nitroso amines when the substituents are
1 \(R_{1}=H, R_{2}=C_{2} H_{5}, R_{3}=H\)
2 \(R_{1}=H, R_{2}=R_{3}=C_{3}\)
3 \(R_{1}=R_{2}=H, R_{3}=C_{2} H_{5}\)
4 \(\mathrm{R}_{1}=\mathrm{CH}_{3}, \mathrm{R}_{2}=\mathrm{R}_{3}=\mathrm{H}\)
Explanation:
\(R_{1}=H\) and \(R_{2}=R_{3}=C_{3}\)

Sec. amines react with nitrous acid to form nitroso amine yellow liquid.