267668-97-3

Upstream product

• 4229-44-1 N-methylhydroxyamine hydrochloride 
• 53952-98-0 2-(prop-2′-ynyl)benzaldehyde 
• 267668-82-6 (3-(2-(1,3-dioxolan-2-yl)phenyl)prop-1-yn-1-yl)trimethylsilane 
• 267668-84-8 2-[2-(prop-2-ynyl)phenyl]-1,3-dioxolane 
• 6630-33-7 ortho-bromobenzaldehyde 
• 34824-58-3 2-(2-bromophenyl)-1,3-dioxolan 

Relevant academic research and scientific papers

Dihydro[c]benzazepin-3-ones via conjugated nitrone-allene precursors

Treatment of o-propargylaryl nitrones with base provided 1,2-dihydro[c]benzazepin-3-ones in good yields. The straightforward transformation is explained on the basis of a multistep rearrangement involving conjugated allene-nitrones as precursors of a 1,7-dipolar electrocyclization process that is followed by further bond reorganizations.