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17: Reacciones radicales

  • Page ID
    2454
  • Beginning with acid-base reactions and continuing though the chapters on nucleophilic substitution, carbonyl addition, acyl transfer, carbanion intermediate, and electrophilic mechanisms, we have studied reaction mechanisms in which both electrons in a covalent bond or lone pair move in the same direction. In this chapter, we will learn about some reactions in which the key steps involve the movement of single electrons. Single-electron mechanisms involve the formation and subsequent reaction of free radical species, highly unstable intermediates that contain an unpaired electron.  We will learn in this chapter how free radicals are often formed from homolytic cleavage, an event where the two electrons in a breaking covalent bond move in opposite directions.