名称:
Enantioselective Synthesis of 2,2,5-Tri- and 2,2,5,5-Tetrasubstituted Tetrahydrofuransvia[4 + 2] Cycloaddition and Ring-Opening Cross-Metathesis
摘要:
A chiral vinyl sulfoxide has been developed that undergoes highly diastereoselective Diels-Alder cycloadditions with various substituted furans in excellent yield. The cycloadducts can be stereoselectively transformed Into 2,2,5-tri- and 2,2,5,5-tetrasubstituted tetrahydrofurans, which are structural subunits of many natural products, via regioselective ring-opening metathesis/cross-metathesis or oxidative cleavage/refunctionalization.