Punjab Medical Punjab - MET Solved Paper-2011

  • question_answer
    1-3-butadiene when treated with\[B{{r}_{2}}\]gives

    A)  1, 4-dibromo-2-butene

    B)  1, 3-dibromo-1-butene

    C)  3, 4-dibropio-2-butene

    D)  2, 3-dibromo-2-butene

    Correct Answer: A

    Solution :

    \[C{{H}_{2}}=CH-CH=C{{H}_{2}}\xrightarrow{B{{r}_{2}}}\]             \[\underset{1,\,\,4-dibromobut-2-ne}{\mathop{BrC{{H}_{2}}CH=CHC{{H}_{2}}Br}}\,\]\[\underset{3,\,\,4-dibromo\,\,butene}{\mathop{+BrC{{H}_{2}}CHBrCH=C{{H}_{2}}}}\,\]


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