Bond of azo compounds

Carbenes insert into the N=N bond of azo compounds and the unstable adducts rearrange spontaneously to produce benzopyrazoles (e.g. Scheme 7.31) [37,38], The reactions of azo compounds with dichlorocarbene is also catalysed by tertiary amines [36] and, under such conditions, azoxyarenes produce the benzimidazoles, presum-... 

Acyl ylides add to N—N double bonds of azo compounds giving rise to the formation of l-A/-sub-stituted alkylidenephosphoranes (e.g. equation 29). ° It should be mentioned that l-/V-substituted ylides, which carry only hydrogen or alkyl groups at the nitrogen, are unknown. ... 

When the double bond of azo compounds is excited either directly or via sensitizers, a reversible Z,E-isomerization is observed. ... 

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See also in sourсe #XX -- [ , , ]

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