Identify ‘ A ’ and ‘ B ’ in the following conversion. CH 3 - I → KCN A → Na / C 2 H 5 OH B

Methyl iodide can be converted into ethyl amine in two stage reaction sequence as shown below: The starting compound methyl iodide contains one carbon atom while the product ethylamine contains two carbon atoms. A reaction in which the number of carbon atoms increases involve a step-up reaction. The overall conversion of methyl iodide into ethyl amine is a step-up conversion.

Identify ‘ A ’ and ‘ B ’ in the following conversion. CH 3 - Br → AgNO 2 A → Sn / HCl B

Methyl bromide can be converted into nitromethane by reacting with AgNO 2 . Aliphatic and aromatic nitro-compounds can be reduced to primary amines using a metal-acid mixture like Sn / HCl or catalytic hydrogenation. The chemical reaction is as follows:

Identify ‘ A ’ and ‘ B ’ in the following conversion. C 2 H 5 - I → AgCN A → Na / C 2 H 5 OH B

AgCN is predominantly covalent as there is an equal sharing of electrons between two atoms which is homolytic fission. The fission is as follows: AgCN → Ag ∙ + CN ∙ The nucleophilic attack takes place from the nitrogen side instead of carbon because carbon is covalently bonded to silver due to very less electronegativity difference and nitrogen is free to donate its electron pair. So, the main product formed is alkyl isocyanide. The reaction of AgCN with R - X is as follows:

E M B I B E

Chemistry Standard 12>Chapter 13 - Amines>Use your brain Power

Maharashtra Board Solutions for Chapter: Amines, Exercise 4: Use your brain Power

Author:Maharashtra Board

Maharashtra Board Chemistry Solutions for Exercise - Maharashtra Board Solutions for Chapter: Amines, Exercise 4: Use your brain Power

Attempt the practice questions on Chapter 13: Amines, Exercise 4: Use your brain Power with hints and solutions to strengthen your understanding. Chemistry Standard 12 solutions are prepared by Experienced Embibe Experts.