Dioxopyrrolines. LX. Cycloaddition Reaction of 4-Benzoyl-5-ethoxycarbonyl-1-phenyl-1H-pyrrole-2,3-dione to Olefins: An Inverse-Electron-Demand Hetero Diels-Alder Reaction.
Dioxopyrrolines. LX. Cycloaddition Reaction of 4-Benzoyl-5-ethoxycarbonyl-1-phenyl-1H-pyrrole-2,3-dione to Olefins: An Inverse-Electron-Demand Hetero Diels-Alder Reaction.
作者:Yoshie HORIGUCHI、Takehiro SANO、Yoshisuke TSUDA
DOI:10.1248/cpb.44.670
日期:——
Thermal cycloaddition of 4-benzoyl-5-ethoxycarbonyl-1-phenyl-1H-Pyrrole-2, 3-dione (dioxopyrroline) 1 to electron-rich olefins smoothly proceeded in a highly regio- and stereoselective manner to give pyranopyrrole derivatives in excellent yields. The reaction is a typical inverse-electron-demand hetero Diels-Alder reaction, in which dioxopyrroline behaves as an electron-deficient diene.