Frontier orbital controlled cycloaddition of 2-azapentalenes

✍ Scribed by Klaus Hafner; Heinz-Gerd Kläs; Michael C. Böhm

• Book ID: 104225955
• Publisher: Elsevier Science
• Year: 1980
• Tongue: French
• Weight: 204 KB
• Volume: 21
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)93619-0

✦ Synopsis

It is shown that cycloadditions of 1,3-bis(dimethylamino)pentalenes and their Eazaanalogues with activated alkines are frontier orbital controlled whereas protonation is charge controlled. Formal [2+2]-cycloadditionsof pentalenes with activated alkines provide an interesting method X +'N X X 03 I,',