1. Outline the reaction sequence for formation of 4-Chlorotoluene from p-Toluidi

Question

1. Outline the reaction sequence for formation of 4-Chlorotoluene from p-Toluidine.

2. Explain the change in color of copper sulfate from blue to white. Support your answer with suitable reactions.

2. Why was sodium sulfite added to a solution of copper sulfate in water and sodium chloride?

3.a) In the diazotization of p-toluidine how was the nitrous acid generated.

b) How did you ensure the presence of excess of nitrous acid in the solution and why was it needed?

4. On adding the solution of Copper (I) Chloride to a diazonium salt of p-toluidine, what were your observations?

5. p-Cholorotoluene forms an oily layer on top of top of the copper salt solution. However, on steam distillation it sinks to the bottom of the collecting flask. Explain.

9. In the end, state the importance of Sandmeyer reaction.

Explanation / Answer

Answers

1. Outline the reaction sequence for formation of 4-Chlorotoluene from p-Toluidine.

Formation of a benzyne intermediate explains why substituted aryl halides form mixtures of products. Nucleophilic aromatic substitution by an elimination

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