IUPAC mechanism nomenclature

In the former (Ingold) nomenclature this was called the SRN1 mechanism (see IUPAC, 1989a). This scission may consist of two steps, forming first an aryldiazenyl radical and the phenylthiolate radical (see Sec. 8.6). 

By heterolytic dissociation into carbocations and dinitrogen followed by the addition of a nucleophile (called Dn + An mechanism in the new IUPAC nomenclature103, Sjyl in the former Ingold nomenclature). 

While developing the connections between structure, reaction, and mechanism, we will also extend the fundamentals of IUPAC nomenclature to functional group families, beginning with alcohols and alkyl halides. 

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