question_answer

                         Name the reagents and write the chemical equations for the preparation of the following compounds by Williamson synthesis. (i) Ethoxybenzene, (ii) 2-Methyl-2-methoxypropane

Answer:

                (i) The reagents are sodium phenoxide and bromoethane (i) The reagents are sod. 2-methyl-2-propoxide and bromomethane \[\underset{Sod.\,2\text{-}methyl\text{-}2\text{-}propoxide}{\mathop{C{{H}_{3}}-\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-ONa}}\,\,\,\,\,\,+\,\,\,\,\underset{Bromomethane}{\mathop{C{{H}_{3}}-Br}}\,\,\,\,\,\,\xrightarrow{heat}\]\[\underset{2\text{-}Methyl\text{-}2\text{-}methoxypropane}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}}\,-OC{{H}_{3}}+NaBr}}\,\]