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azirine
Azirines are three membered heterocyclic unsaturated (i.e. they contain a double bond) compounds containing a nitrogen atom and related to the saturated analogue aziridine. They are highly reactive yet have reported in a few natural products such as Dysidazirine. There are two isomers of azirine: 1''H''-azirines with a carbon-carbon double bond are not stable and rearrange to the tautomeric 2''H''-azirine, a compound with a carbon-nitrogen double bond. 2''H''-Azirines can be considered strained imines and are isolable.
== Preparation==
2''H''-Azirines are most often obtained by the thermolysis of vinyl azides. During this reaction, a nitrene is formed as an intermediate. Alternatively, they can be obtained by oxidation of the corresponding aziridine.
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抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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