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 _    _    _    _     ______     ___      ______  
| \  / || | || | ||  /_   _//   / _ \\   /_   _// 
|  \/  || | || | ||    | ||    | / \ ||    | ||   
| .  . || | \\_/ ||   _| ||    | \_/ ||   _| ||   
|_|\/|_||  \____//   /__//      \___//   /__//    
`-`  `-`    `---`    `--`       `---`    `--`

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Text this: Formal [4+2]-annulation of vinyl azides with N-unsaturated aldimines