BCECE Medical BCECE Medical Solved Papers-2015

  • question_answer
    Which of the following organic chloro compound shows stereochemical inversion during a \[{{S}_{N}}2\] reaction?

    A)  \[{{(C{{H}_{3}})}_{3}}CCl\]

    B)  \[{{(C{{H}_{3}})}_{2}}CHCl\]

    C)  \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHCl\]

    D)  \[C{{H}_{3}}Cl\]

    Correct Answer: D

    Solution :

    Since, we know that primary halides show inversion during \[{{S}_{N}}2\] reaction more than secondary while secondary show more than tartiary. Therefore, \[C{{H}_{3}}Cl\] (\[{{1}^{o}}\]halide) show sterechemical inversion more in comparison to \[{{(C{{H}_{3}})}_{3}}CCl\] (\[{{3}^{o}}\] halide), \[{{(C{{H}_{3}})}_{2}}\,CHCl\] (\[{{2}^{o}}\]halide) and \[{{({{C}_{2}}{{H}_{5}})}_{2}}CHCl\] (\[{{2}^{o}}\] halide).


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