Question
Write a note on Wurtz reaction and its Limitations.
✓
Answer
→ Alkyl halides react with sodium in dry ether to give hydrocarbons containing double the number of carbon atoms present in the halide.
→ This reaction is known as Wurtz reaction.
$2 RX +2 Na \xrightarrow[\text { ether }]{\text { dry }} R - R +2 NaX$
Limitation:
(1) This method is suitable to produce an alkane only with even number of carbon.
(2) If alkyl halide is tertiary, the alkene is major product.
→ This reaction is known as Wurtz reaction.
$2 RX +2 Na \xrightarrow[\text { ether }]{\text { dry }} R - R +2 NaX$
Limitation:
(1) This method is suitable to produce an alkane only with even number of carbon.
(2) If alkyl halide is tertiary, the alkene is major product.
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Identify the compounds A, B and C in the following reaction:
$\text{CH}_3-\text{Be}\ \xrightarrow{\ \ \text{Mg/ Ether}}\ \text{(A)}\ \xrightarrow[\text{(ii)}\text{Water}]{\ \ \text{CO}_2}\ \text{(B)}\ \xrightarrow[\triangle]{\ \ \text{CH}_3\text{OH}/\text{H}^+}\ \text{(C)}$
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