(a) 1-phenylethanol from a suitable alkene? (b) Cydohexylmethanol using an alkyl halide by an SN2 reaction?

Question

Show how will you synthesize:

(a) 1-phenylethanol from a suitable alkene?

(b) Cydohexylmethanol using an alkyl halide by an S_N2 reaction?

(c) Pentan-l-ol using a suitable alkyl halide?

Answer 1

(a) Addition of H₂O to ethenyl- benzene (or styrene) in presence of dil.H₂SO₄ gives 1-phenylethanol.

(b) Hydrolysis of cyclohexylmethyl bromide by aqueous NaOH gives cyclohexylmethanol.

(c) Hydrolysis of 1-bromopentaneby aqueous NaOH gives pentan-l-ol.