What it the exported major product for the following reaction? What reagents are

Question

What it the exported major product for the following reaction? What reagents are needed to accomplish the following transformation? What is (are) live expected major product (s) for the following reaction sequence? What is the name of the product formed when 5-chloro-1-methylcyclohexene is reduced with a Pt catalyst and H_2? A) 1-chloro-2-methylcyclohexane B) 1-chloro-3-methyleyelohexane C) 1-chloro-5-methylcyclohexane D) 3-chJoro-l-methylcyclohexane E) None of the above Which of the following sets of reagents accomplishes the transformation shown below? Which alkene would yield 3-methylpenlane upon subjection to catalytic hydrogenation?

Explanation / Answer

25) D, oxymercuration of alkene gives markovnikov alcohol product

26) D, hydroboration of alkene is a syn addition so hydrogen and alcohol will have the same stereochemistry.

27)A, boron adds to the least hindered Carbon.

28) B, Pt/H2 will reduce alkene to alkane. Chloro group has highest priority over substituent methyl group. Hence chlorine is numbered 1 and subsequently methyl get numbered as 3.

29)C, reduction over metal surface

30)B

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