Amine Reactions

Question 1

Halogenoalkane -> Aliphatic Amine

Answer 1

Type: Nucleophilic Substitution
Reagents: Excess Ammonia dissolved in Ethanol

CH3CH2CH2CH2Br + 2NH3 -> CH3(CH2)3NH2 + NH4Br

Question 2

Nitrile -> Aliphatic Amine

Answer 2

Type: Reduction
Reagent: Lithium Aluminium Hydride in dry ether

CH3CH2C≡N + 4[H] -> CH3CH2CH2NH2

Question 3

Nitroarene -> Aromatic Amine

Answer 3

Type: Reduction
Reagent: LiAlH4 in dry ether

C6H5NO2 + 6[H] -> C6H5NH2 + 2H2O

Question 4

Ethanoylation of amine

Answer 4

Type: Ethanoylation
Reagent: CH3COCl -> C6H5NHCOCH3 + HCl

Question 5

Aromatic Amine -> Azodye

Answer 5

Type: Coupling
Conditions: HNO2 + NaCl

C6H5NH2 + NaNO2 + HCL -> C6H5N2+Cl- + 2H2O

Conditions: Alkaline
C6H5N2+Cl- +C6H5OH + NaOH -> C6H5(N=N)C6H5OH + NaCl + H20

Question 6

Aliphatic/Aromatic Amine -> Alcohol

Answer 6

Conditions: Room Temperature

CH3CH2CH2NH2 + HNO2 -> CH3CH2CH2OH +N2 + H2O

C6H5NH2 + HNO2 -> C6H5OH + N2 + H2O

Question 7

Amine -> Ammonium Salt

Answer 7

Type: Neutralisation
Reagent: HCl

CH3NH2 + HCl -> CH3NH3+Cl-