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What is the product when chloral (CCl3CHO) reacts with chlorobenzene (C6H5Cl) in the presence of concentrated H2SO4?

1. Lindane
2. DDT
3. Teflon
4. Ethaneperchlorate

Correct answer: DDT

Solution

DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) is synthesized by the reaction of chloral (CCl3CHO) with two equivalents of chlorobenzene in the presence of concentrated sulfuric acid as a Lewis/Brønsted acid catalyst. The reaction is an electrophilic aromatic substitution.

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