question_answer

Classify the following transformations according to the reaction type. (a) \[{{H}_{3}}C-CH=CH-C{{H}_{3}}+B{{r}_{2}}\]\[\xrightarrow{\,}\,{{H}_{3}}C-CHBr-CHBr-C{{H}_{3}}\]                 (b) \[{{({{H}_{3}}C)}_{2}}C=C{{(C{{H}_{3}})}_{2}}+B{{r}_{2}}\xrightarrow{{}}{{({{H}_{3}}C)}_{2}}C=C(C{{H}_{3}})C{{H}_{2}}Br+HBr\] (c) \[{{H}_{2}}C=CH-C{{H}_{2}}C{{H}_{3}}\xrightarrow{{}}{{H}_{3}}C-CH=CH-C{{H}_{3}}\]               (d) \[{{C}_{6}}{{H}_{5}}CHO+C{{H}_{3}}COC{{H}_{3}}\xrightarrow{{}}{{C}_{6}}{{H}_{5}}CH(OH)C{{H}_{2}}COC{{H}_{3}}\] (e) \[{{(C{{H}_{3}})}_{3}}CCl\,+H{{O}^{-}}\,\xrightarrow{\,}\,{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\] (f) \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  Ph \end{smallmatrix}}{\mathop{C}}\,=N-OH+{{H}_{3}}{{O}^{+}}\xrightarrow{\,}\,C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  NHPh \end{smallmatrix}}{\mathop{C}}\,=O\]

Answer:

                (a) Electrophilic addition     (b) Free radical substitution                             (c) Isomerisation (d) Condensation                                 (e) \[\beta \]-Elimination reaction                     (f) Rearrangement.