Azyline

Trivial names, numbering of substituents in and on the rings are based on azyline, proline, and pipecolic acid. 

S)-Aziridine-2-carboxylic acid (1), also named azyline (Azy)J4L42] exhibits an electron-withdrawing or quasi-aromatic effect on the nitrogen and is therefore susceptible to an attack by nucleophiles. [41 43] Unprotected aziridine-2-carboxylic acid (1) is very labile, but the... 

Azyline), is formed by the action of nitric oxide on dimethyl-aniline, and by action of paradiazodimethylaniline on the same amine [22]. 

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