Bromination of conjugated dienes

More recently, the use of benzoyl peroxide catalyst or light (or both) has extended the scope of the reaction. Thus, previously unsuccessful brominations of conjugated diene systems and terminal methyl groups can now be accomplished. ... 

Allylic bromination by NBS can be applied with success not only to olefins but also to <%,/ -unsaturated ketones, carboxylic esters, nitriles, and lactones. Radical-formers must be added when NBS is used for allylic bromination of conjugated dienes, for side-chain bromination of aromatic or heterocyclic compounds (see p. 198), or for replacement of tertiary hydrogen atoms next to a C=C bond. 

---

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

---