Uttarakhand PMT Uttarakhand PMT Solved Paper-2007

  • question_answer
    Methyl n-propyl ketone on oxidation with \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] and\[{{H}_{2}}S{{O}_{4}}\] give mainly

    A)  \[C{{H}_{3}}C{{H}_{2}}COOH+C{{H}_{3}}COOH\]

    B)  \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}COOH+HCOOH\]

    C)  \[C{{H}_{3}}COOH+HCOOH\]

    D)  \[C{{H}_{3}}C{{H}_{2}}COOH+C{{O}_{2}}+{{H}_{2}}O\]

    Correct Answer: A

    Solution :

     During oxidation of unsymmetrical ketones, i.e., n-propyi methyl ketone, the keto group stays with the smaller alkyi group (Popoffs rule) i.e.,\[C{{H}_{3}}C{{H}_{2}}COOH\]and\[C{{H}_{3}}COOH\]are formed. \[C{{H}_{3}}COC{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\xrightarrow[{}]{[O]}C{{H}_{3}}COOH\]   \[+C{{H}_{3}}C{{H}_{2}}COOH\]


You need to login to perform this action.
You will be redirected in 3 sec spinner