1.

Cosider the given reaction for preparation of alkyne. (Fritsch reaction). Anti group will migrate because of less steric hindrance. Rate of reaction when the halide ion :

Answer»

`I^(Θ)GTCL^(Θ)gtBr^(Θ)gtF^(Θ)`
`I^(Θ)gtBr^(Θ)gtCl^(Θ)gtF^(Θ)`
`F^(Θ)gtCl^(Θ)gtBr^(Θ)gtI^(Θ)`
`F^(Θ)gtBr^(Θ)gtCl^(Θ)gtI^(Θ)`

Solution :Good leaving GROUP


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