Neet Solved Paper 2015 Question 33
Question: The reaction, $ CH _3-\underset{\underset{CH _3}{\mathop{|}},}{\overset{\overset{CH _3}{\mathop{|}},}{\mathop{C}}},-O,Na+CH _3CH _2Cl\xrightarrow[-NaCl]{} $ $ CH _3-\underset{\underset{CH _3}{\mathop{|}},}{\overset{\overset{CH _3}{\mathop{|}},}{\mathop{C}}},-O+CH _2-CH _3 $ is called
Options:
A) Williamson synthesis
B) Williamson continuous etherification process
C) Etard reaction
D) Gatterman-Koch reaction
Show Answer
Answer:
Correct Answer: A
Solution:
- The reaction of alkyl halides with sodium alkoxide or sodium phenoxide to form ethers is called Williamson synthesis. Here, in this reaction alkyl halide should be primary and alcoxide, e.g. should be bulkier as shown below, $ \underset{\begin{smallmatrix} Alkyl \\ halide \end{smallmatrix}}{\mathop{R}},-,X+\underset{Sodiumalcoxide}{\mathop{R’,-ONa}},\xrightarrow{,},\underset{Ether}{\mathop{R-O-R’,+NaX}}, $ $ CH _3-\underset{\begin{smallmatrix} | \\ CH _3 \end{smallmatrix}}{\overset{\begin{smallmatrix} CH _3 \\ | \end{smallmatrix}}{\mathop{C}}},-ONa,+CH _3CH _2Cl\xrightarrow[-NaCl]{} $ $ CH _3-\underset{\begin{smallmatrix} | \\ CH _3 \end{smallmatrix}}{\overset{\begin{smallmatrix} CH _3 \\ | \end{smallmatrix}}{\mathop{C}}},-O-CH _2-CH _3 $
