Question

Which of these compounds represents the major monochlorination isomer formed in the following reaction?

Answer 1

The major mono chlorination isomer will be,

(Refer to Image 1)

The reason behind formation of this isomer is stability of free radical intermediate.

(Refer to Image 2)

This tertiary $\left(3^o\right)$ free radical is more stable than other intermediates.

$3^o>2^o>1^o$

Stability of free radical.