WB JEE Medical WB JEE Medical Solved Paper-2008

  • question_answer
    The major product P in the following reaction  is\[C{{H}_{3}}-CH=C{{H}_{2}}\xrightarrow[peroxide]{HI}P\]

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

    B)  \[C{{H}_{3}}-\underset{\text{I}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\]

    C)  \[\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}-CH=C{{H}_{2}}\]          

    D)  \[\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}-\underset{\text{I}}{\mathop{\underset{|}{\mathop{C}}\,}}\,{{H}_{2}}\]

    Correct Answer: B

    Solution :

                     The product of given reaction will be according to Markownik of Ps rule, this is because peroxide effect is applicable only in case of HBr and not effective in case of HI. \[C{{H}_{3}}-CH=C{{H}_{2}}\xrightarrow[peroxide]{HI}C{{H}_{3}}-\underset{\text{I}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}\]


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