4,4,6,7-tetrabromo-3,3,8,8-tetramethylbicyclo[5.1.0]oct-5-ene

1,1-dibromo-2,2-dichloro-3,3-dimethylcyclopropane

1,1-dibromo-2-(2,2-dimethylpropyl)-2-methylcyclopropane

(2,2-dibromocyclopropyl)methylbenzene