Dienophilie des olefines captodatives - VI1 syntheses et cycloadditions de diels-alder des α-alkylthio-acrylates d'alkyle avec le cyclopentadine : influence des facteurs steriquis sur la reactivite et sur la stereoselectivite
作者:Jean-Luc Boucher、Lucien Stella
DOI:10.1016/s0040-4020(01)85989-5
日期:1988.1
The Diels-Alder reactions of cyclopentadiene with a series of four α-alkylthio-alkyl acrylates were investigated. Although slightly slower than the reactions of unsubstituted alkyl acrylates, the spontaneous cycloadditions of these captodative olefins occur at room temperature affording adducts in excellent yield. The steric effect of the ester function is found to be more important in determining