Write a note on Fittig reaction.
Answers
Fittig reaction is a Substitution reaction in which aryl group containing a good leaving group is treated with another aryl group with a good leavind group.
In the prescence of Na and dry ethee this reaction is initiated and follows a free radicle pathway.
The leaving group leaves the aryl forming a free radicle another free radicle formed the same way combines with the previous radicle to form product.
Reaction:- phcl + Phcl ——Na + dry ehter—-> ph-ph
Answer:
When two aryl(aromatic) groups mix with sodium in dry ether or THF (tetrahydrofuran), it is known as a "coupling reaction" and results in the formation of a biaryl species.
For illustration, dry ether and halobenzene react to generate biphenyl when the sodium metal is present.
In this case, X = Cl, Br, and I.
This reaction and the Wurtz-Fittig and Wurtz reactions are not the same, despite being quite similar.
An aryl group joins forces with an alkyl group in the Wurtz-Fittig Mechanism.
In dry ether with sodium metal present, the Wurtz reaction occurs when two alkyl groups come together.
The two aryl groups mix in this reaction, however.
Haloalkanes and Haloarenes Fittig Reaction.
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