Diels-alder cycloadditions of chiral butenolides with cyclopentadiene: endo/exo selectivity
作者:Rosa Batllori、Josep Font、Montserrat Monsalvatje、Rosa M. Ortuño、Francisco Sanchez-Ferrando
DOI:10.1016/s0040-4020(01)80048-x
日期:1989.1
Chiral butenolides are revealed to be good dienophiles in Diels-Alder reactions with cyclopentadiene, affording endo and exo adducts, whose fully characterization is provided. Selectivity of these cycloaddition reactions has been shown to be temperature dependent not as a result of a thermodynamic equilibrium between the isomers, but due to a kinetically controlled process.
在Diels-Alder与环戊二烯的反应中,手性丁烯内酯被证明是良好的亲二烯体,提供了内吸和外加加合物,可提供其充分表征。这些环加成反应的选择性已经显示出与温度有关,这不是由于异构体之间的热力学平衡,而是由于动力学控制的过程。