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Questions
How is chlorobenzene converted into diphenyl/biphenyl?
How would you obtain pure diphenyl from chlorobenzene?
How would you convert chlorobenzene to diphenyl?
Short Answer
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Solution 1
When chlorobenzene is heated with copper, two molecules of chlorobenzene undergo a coupling reaction to form diphenyl (biphenyl), with the elimination of hydrochloric acid (HCl).
\[2\mathrm{C_6H_5Cl} + 2\mathrm{Na} \xrightarrow{\text{Dry ether}} \mathrm{C_6H_5-C_6H_5} + 2\mathrm{NaCl}\]
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Solution 2
When chlorobenzene is heated with copper, two molecules of chlorobenzene undergo a coupling reaction to form diphenyl (biphenyl), with the elimination of hydrochloric acid (HCl).
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Haloarenes - Reaction with Metals
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