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When isopropyl chloride and n-propyl chloride both react simultaneously with sodium metal in dry ether (Wurtz reaction), which alkane is obtained?

1. CH3-CH(CH3)-CH2-CH2-CH3
2. CH3-CH(CH3)-CH2-CH3
3. CH3-CH(CH3)-CH(CH3)-CH3
4. CH3-CH2-CH2-CH2-CH3

Correct answer: CH3-CH(CH3)-CH2-CH2-CH3

Solution

The mixed Wurtz reaction of (CH3)2CHCl with CH3CH2CH2Cl gives the crossed product 2-methylpentane (CH3-CH(CH3)-CH2-CH2-CH3), along with symmetrical products 2,3-dimethylbutane and n-hexane.

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