Bromination of Arenes Table I: Observed Reaction Results Hydrocarbon Observation under RT Observation under RT/hv Toluene Turn colorless in 1 min Turn colorless in 30 sec Ethylbenzene Ture colorless in 30 sec Turn colorless in 30 sec tert-Butylbenzene Stayed brown in 1h Stayed brown in 1h Cyclohexane Stayed brown in 1h Stayed brown in 1h Methylcyclohexane Stayed brown in 1h Turn colorless in 0.5 h Control Stayed brown in 1h Stayed brown in 1h Bromination of E-Stilbene Product yield 0.911 g MP 239-241oC