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Show how will you synthesise : (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 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)overset(Delta)underset("Hydrolysis")RARR underset("Pentan-1-ol")(CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(2)-OH+NaBr)` |
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