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प्रश्न
Diphenyls are potential threat to the environment. How are these produced from arylhalides?
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उत्तर
Diphenyl such as p,p ‘-dichlorodiphenyl trichloroethane (DDT) are posing serious environment problems because of its chemical stability and its fat solubility. Its residue accumulates in environment and its long-term effects could be highly dangerous.
Diphenyl can be prepared from aryl halides by the following two methods:
(i) Fittig reaction
(ii) Ullmann biaryl synthesis
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संबंधित प्रश्न
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| Column I | Column II | |
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| I |
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| III |
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| IV |
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