VMMC VMMC Medical Solved Paper-2009

  • question_answer
    The reaction, \[C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow[2-CuI]{1-Li}\xrightarrow{C{{H}_{3}}C{{H}_{2}}Cl}\]\[n-\]butane is known as

    A) Wurtz synthesis

    B) Corey-House synthesis

    C) Kolbe synthesis

    D) Friedel-Crafts synthesis

    Correct Answer: B

    Solution :

    The reaction in which first, an alkyl halide reacts with lithium and \[CuI\] to give lithium dialkylcuprate which on further reaction with alkyl halide, gives alkane, is known as Corey-House synthesis. \[C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow[-LiCl]{Li}C{{H}_{3}}C{{H}_{2}}Li\xrightarrow{CuI}\] \[{{(C{{H}_{3}}C{{H}_{2}})}_{2}}CuLi\]     \[\xrightarrow{C{{H}_{3}}C{{H}_{2}}Cl}\underset{n-\,bu\tan e}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}}}\,+C{{H}_{3}}C{{H}_{2}}Cu\] \[+LiCl\]              


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