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3- cyanopyridine IV-oxide

Pyridine iV-oxides also provide access to 2-chloropyridines. Treatment of 4-cyanopyridine iV-oxide with phosphorus oxychloride under reflux for 24 h results in the formation of 2-chloro 4-cyanopyridine in 69% yield <2001TL6815> (Equation 80). [Pg.143]

The cyanation of alkylated pyridine-l-oxides (X-S8) leads to 2- or 4-cyanopyridines " (see also Chapter IV). The intermediate quaternary salts (X-88) can be isolated. Related acylated pyridinum-l-imines (X-89) undergo a similar reaction. ... [Pg.274]

See other pages where 3- cyanopyridine IV-oxide is mentioned: [Pg.229]    [Pg.114]    [Pg.292]    [Pg.114]    [Pg.42]    [Pg.170]    [Pg.229]    [Pg.114]    [Pg.292]    [Pg.114]    [Pg.42]    [Pg.170]    [Pg.1237]    [Pg.4691]    [Pg.330]    [Pg.216]   


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3-Cyanopyridine

Cyanopyridines

Cyanopyridines oxidation

IV-oxides

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