1.

What one is used reactive towards S_(N^(1)) reaction?

Answer»

`C_(6)H_(5)CH(C_(6)H_(5))Br`
`C_(6)H_(5)CH(CH_(3))Br`
`C_(6)H_(5)C(CH_(3))(C_(6)H_(5))Br`
`C_(6)H_(5)CH_(2)Br`

Solution :`S_(N^(1))` reactions involve the formation of carbocations, order of stability of carbocation is `3^(@)gt2^(@)gt1^(@)` HENCE higher the stability of carbocation, more will be the reactivity of the parent alkyl halide. Moreover the tertiary carbocation formed from (c) is stabilized by two PHENYL GROUPS.


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