English: example of an inernal radical reaction: this radical reaction can be considered to be part of a radical chain reaction of 6-bromo-1-hexene. When 6-bromo-1-hexene is irradited with UV-light, the radical at the left is obtained, which (primarily) results in the methylcyclopentane radical. This product will react with an other 6-bromo-1-hexene molecule, forming the radical at the left and bromomethylcyclopentane