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Show how will you synthesize (i) 1-phenylethanol from a suitable alkene. (ii) cyclohexylmethanol using an alkyl halide by an S_(N)2 reaction. (iii) pentan-1-ol using a suitable alkyl halide. |
Answer» Solution :(i) Addition of `H_(2)O` to ethenylbenzene (or styrene) in presence of dil. `H_(2)SO_(4)` gives 1-phenylethanol.  (II) Hydrolysis of cyclohexylmethyl bromide by aqueous NAOH gives cyclohexylmethanol  (iii) Hydrolysis of 1-bromopentane by aqueous `NaOH` gives pentan-1-ol. `underset("1-Bromopentane")(CH_(3)CH_(2)CH_(2)CH_(2)CH_(2))-Br+NaOH(aq) underset(S_(N)2,"Hydrolysis")OVERSET(Delta)to underset("Pentan-1-ol")(CH_(3)CH_(2)CH_(2)CH_(2)CH_(2))-OH+NaBr` |
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