question_answer 89)

  Write the structures and names of the compounds formed when compound 'A' with molecular formula,  is treated with  in the presence of

Answer:

                  Since both the carbon atoms of the double bond has the same number of hydrogen atoms (i.e. 1), therefore, Mark ovnikov's rule cannot be applied. In other words, both the products (A and B) will be formed.                 Further, since the carbocation (I) leading to the formation of compound (A) is slightly less stable than carbocation (Et) leading to the formation of compound (B), therefore,                                         the amount of 2-chloropentane (B) will be slightly more than that of 3-chloropentane (A), approx. 55 : 45.