1.

In the following sequence of reactions, Zoversett(PCl_(5))to X overset("Alc. KOH")to Y underset((ii)" "H_(2)O", boil")overset((i)" conc. "H_(2)SO_(4))to Z is

Answer»

`CH_(3)CH_(2)CH_(2)OH`
`CH_(3)CHOHCH_(3)`
`CH_(3)CH_(2)CH_(2)CH_(2)OH`
`(CH_(3))_(3)C CH_(2)OH`

Solution :Since alkenes give Markovnikov's ADDITION products, therefore, `1^(@)` ALCOHOLS (a), (c) and (d) cannot be obtained by hydration. Thus, Z must be 2-propanol, i.e.,
`underset((Z))(CH_(3)CHOHCH_(3))overset(PCl_(5))to underset((X))(CH_(3)CHClCH_(3))underset(-HCL)overset("Alc. KOH")to underset((Y))(CH_(3)CH=CH_(2)) underset((ii)" "H_(3)O^(+))overset((i)" conc. "H_(2)SO_(4))to underset((Z))(CH_(3)CHOHCH_(3))`


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