Question

17. a) Write equation of the following reactions:-
i) Wurtz reaction
ii)Wurtz-Fittig reaction
b) Predict the main product of the following reactions:-
(i) CH3-CH2-CH2-0-CH3+HBr →
(ii) CH-CH=CH HẠO,
(iii) CHACHACH-CHO NaBH
CH,​

Answer 1

Answer:

Explanation:

(a) Wurtz reaction

Alkyl halides react with sodium in presence of dry ether to form higher alkanes. For example, methyl bromide reacts with sodium in presence of dry ether to form ethane.

CH  

3

​  

−Br+2Na+Br−CH  

3

​  

 

dry ether

​  

CH  

3

​  

−CH  

3

​  

+2NaBr

(b) Wurtz-Fittig reaction

Aryl halides react with alkyl halides in presence of sodium to form substituted aromatic compounds. For example, bromobenzene reacts with methyl iodide in presence of sodium to form toluene.

C  

6

​  

H  

5

​  

−Br+2Na+I−CH  

3

​  

→C  

6

​  

H  

5

​  

−CH  

3

​  

+NaBr+NaI