Q. In Williamson’s synthesis
A) An alkyl halide is treated with sodium alkoxide
B) An alkyl halide is treated with sodium
C) An alcohol is heated with conc. $H_{2}SO_{4}\ at\ 130℃$
D) None of the above
Explanation
(a)
Williamson’s synthesis It is the best method for the laboratory preparation of both simple and mixed ethers and involves the action of sodium alkoxide on a suitable alkyl halide.
$C_{2}H_{5} - Br + C_{2}H_{5}ONa \rightarrow C_{2}H_{5} - O - C_{2}H_{5} + NaBr$
Ethyl bromide diethyl ether
$C_{2}H_{5} - Cl + C_{6}H_{5} - ONa \rightarrow C_{6}H_{5} - O - C_{2}H_{5} + NaCl$
Ethyl phenyl ether
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.