Quiz - Amines and Derivatives | Amines and their Derivatives

1

Which of the following molecules is a secondary amine?

3-aminobutan-1-ol

N,N-dimethylpentan-2-amine

N-ethyl-N-methylpropan-2-amine

N-methylcyclohexanamine

2

Which of the following statements is correct about ethylamine?

EtNH2 is immiscible with water

EtNH2 has a higher boiling point than EtOH

EtNH2 is a good electrophile

Hydrogen bond formation occurs between H2O and EtNH2

Amines have properties similar to alcohols and ethers. They can serve as nucleophile and participate in hydrogen bonding (high boiling point + soluble in water). However, oxygen is more electronegative than nitrogen ⇒ amines have weaker hydrogen bonding than alcohols and so lower boiling point

3

Which of the following statement about the reaction between 1-bromopropane and ammonia is incorrect?

The first step is a nucleophilic substitution

The reaction specifically gives a primary amine

The reaction initially gives propan-1-amine

One of the byproducts is NH4+

4

Which of the following statements about the reaction between pentanenitrile and LiAlH4 is correct?

The reaction is a reduction

The product is 1-butylamine

There is no significant change in carbon NMR

All of the above

5

Which of the following reagents is used for the reductive amination of an aldehyde?

NaBH4

LiAlH4

NaBH3CN

BH3

Amines by reductive amination - Reduction step:

6

What is the chemical function of the major product of a Hofmann elimination?

Alkane

Alkene

Alkyne

Amide

Hofmann elimination: