1.

In which of the following reaction, regioselectivity can be observed .

Answer»

`CH_(3)-underset(H)underset(|)overset(CH_(3))overset(|)C-CH_(2) -CI overset(alc.KOH//DELTA)RARR`
`CH_(3)-underset(CI)underset(|)overset(CH_(3))overset(|)C-CH_(3)overset(alc.KOH//Delta)rarr`
`CH_(3)-underset(CI)underset(|)overset(CH_(3))overset(|)C-CH_(2) -CH_(3)overset(alc.KOH//Delta)rarr`
`CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(2) -CI overset(alc.KOH//Delta)rarr`

Solution :`CH_(3) underset(CI)underset(|)overset(CH_(3))overset(|)C -CH_(2) -CH_(3) overset("alcoholic KOH"//Delta)rarr`
`CH_(3) -CH=underset(CH_(3))underset(|)(C) - CH_(3) + H_(2)C=CH-CH_(2) -CH_(3)` .


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