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Question
What is the difference between Wurtz fitting & Wurtz coupling reaction?
What is the difference between Wurtz fitting & Wurtz coupling reaction?
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Solution
Wurtz coupling reaction
Wurtz Fitting reaction
It is a coupling reaction where two alkyl halide molecules are coupled in the presence of sodium metal in anhydrous ether or tetrahydrofuran to form a new C-C bond, giving rise to symmetrical alkanes (2 alkyl groups bonded together).
CH3-X + 2Na + X-CH3 ----> CH3-CH3 + 2NaX
Dry ether
This reaction involves two aryl halides, which are coupled in the presence of sodium in presence of anhydrous ether to give diaryl hydrocarbons.
2C6H5I + 2Na -------> C6H5-C6H5 + 2NaI
dry ether
Good yields are obtained
Yields are less due to the formation of side products
Wurtz coupling reaction | Wurtz Fitting reaction |
It is a coupling reaction where two alkyl halide molecules are coupled in the presence of sodium metal in anhydrous ether or tetrahydrofuran to form a new C-C bond, giving rise to symmetrical alkanes (2 alkyl groups bonded together). CH3-X + 2Na + X-CH3 ----> CH3-CH3 + 2NaX Dry ether
| This reaction involves two aryl halides, which are coupled in the presence of sodium in presence of anhydrous ether to give diaryl hydrocarbons.
2C6H5I + 2Na -------> C6H5-C6H5 + 2NaI dry ether |
Good yields are obtained | Yields are less due to the formation of side products |
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