In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine

Question

In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different rates. At 35

In radical chlorination of alkanes, non-equivalent hydrogens react with chlorine atoms at different rates. At 35 degree C, primary, secondary, and tertiary C-H bonds react at relative rates of 1 : 3.9 : 5.2 respectively. These are conditions of kinetic control where product ratios are determined by relative rates of formation. For example, if A is formed twice as fast as B, the A:B product ratio will be 2. Consider chlorination of the alkanes below at 35 degree C. Specify the most reactive C-H bond(s), a-c. Specify the site of chlorination in the major monochloro substitution product, a-c.

Explanation / Answer

1)

b (for left molecule);

a (for right side molecule)

2)

b (for left molecule)

b (for right molecule)

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