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. Author manuscript; available in PMC: 2012 Apr 21.
Published in final edited form as: Chem Soc Rev. 2010 Nov 15;40(4):2003–2021. doi: 10.1039/c0cs00067a

Figure 2.

Figure 2

Representative mechanisms for enzymatic functionalization of non-acidic C-H bonds.viii,x,xi A) Electrophilic aromatic substitution. B) Electron abstraction followed by radical coupling. C) H abstraction followed by radical recombination. D) H abstraction followed by radical reaction.