Give the structure of the principal organic product formed by free-radical bromination of...

Give the structure of the principal organic product formed by free-radical bromination of each of the following:

(a) Methylcyclopentane

(b) 1-Isopropyl-1-methylcyclopentane

(c) 2,2,4-Trimethylpentane

Sample Solution (a) Write the structure of the starting hydrocarbon, and identify any tertiary hydrogens that are present. The only tertiary hydrogen in methylcyclopentane is the one attached to C-1. This is the one replaced by bromine.