What are the differences between the bromination reaction of benzene, toluene and cyclohexane?
2007-01-21 03:00:36 · 3 answers · asked by athame 3 in Science & Mathematics ➔ Chemistry
Bromination of benzene is an electrophilc substitution reaction, but benzene is normally very unwilling to be brominated in this way. The reaction requires a catalyst such as FeBr3.
Methylbenzene (toluene) can be brominated by substitution in the ring (as above) or in the side-chain, by the use of UV light.
Cyclohexane will react with bromine by a free radical mechanism in the presence of UV light.
2007-01-21 03:25:20 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
Bromination of benzene is an electrophilic process, necessitating the use of an acid, HBr will do. Cyclohexane is brominated by a free radical process, Br2 + UV light. Toluene can be brominated on the ring in the same manner as benzene, but can also be brominated on the methyl group using N-Bromosuccinamide (NBS).
2007-01-21 03:08:26 · answer #2 · answered by Glenguin 7 · 0⤊ 1⤋
At bormination of alcanes( cyclohexane) is mostly and exoterm process, is performed without additional help of catalysts, for benzene you need catalyst, and at toluene as far as i know some additional energy.
2007-01-21 03:10:41 · answer #3 · answered by mokuska 2 · 0⤊ 1⤋