MHT CET 2023 Chemistry question
Identify substrate 'A' in the following sequence of reaction
A B 2-Methylbutane
Answer: (B)
Solution
Work backwards. Na/ether with is the Wurtz reaction: \mathrm{R{-}Cl + 2Na + Cl{-}C_2H_5 \to R{-}C_2H_5 + 2NaCl}. The product 2-methylbutane is \mathrm{(CH_3)_2CH{-}CH_2CH_3}, i.e. isopropyl + ethyl. So B must be the isopropyl halide, 2-chloropropane . B is obtained from
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