The 2π + 2π cycloaddition of an allyl cation to (1Z,3E)-cycloalkadienes. Evidence for a stepwise process in the lonic Diels-Alder reaction.

✍ Scribed by Paul G. Gassman; Subhash P. Chavan; Lawrence B. Fertel

• Publisher: Elsevier Science
• Year: 1990
• Tongue: French
• Weight: 261 KB
• Volume: 31
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)97098-9

✦ Synopsis

Treatment of (lZ,3E)-cycloalkadienes with 2-vinyl-1,3-dioxolane under acidic conditions produced 1:l cycloadducts in which an intermediate ally1 cation added to the dienes to give tram-fused cyclobutanes as the major products.