High-pressure and thermally induced intramolecular Diels-Alder reactions of furfuryl fumarates. Influence of tether substituents on diastereoselectivity
作者:Thomas Butz、Jürgen Sauer
DOI:10.1016/s0957-4166(97)00015-3
日期:1997.3
Asymmetric intramolecular Diels-Alder (IMDA) reactions of opticallyactive furfuryl fumarates result after crystallization in enantiopure 7-oxabicyclo[2.2.1]heptenederivatives that may be useful buildingblocks for naturalproduct synthesis. The influence of high-pressure and thermal activation has been studied for these cycloadditions. The diastereoselectivities observed increase with the size of