Enantioselective Organocatalytic Addition of Azlactones to Maleimides: A Highly Stereocontrolled Entry to 2,2-Disubstituted-2H-oxazol-5-ones
作者:Andrea-Nekane R. Alba、Guillem Valero、Teresa Calbet、Mercé Font-Bardía、Albert Moyano、Ramon Rios
DOI:10.1002/chem.201000239
日期:2010.8.23
The first highly diastereo‐ and enantioselective organocatalytic synthesis of 2,2‐disubstituted‐2H‐oxazol‐5‐ones is described. The addition of oxazolones to maleimides is promoted by bifunctional thiourea catalysts, which afford the corresponding 2,2‐disubstituted‐2H‐oxazol‐5‐ones with total regio‐ and stereocontrol.
的第一高度diastereo-和对映选择性合成有机催化2,2-二取代-2- ħ描述-恶唑-5-酮。双官能硫脲催化剂促进了将恶唑酮添加到马来酰亚胺中,该催化剂可提供相应的2,2-二取代-2 H-恶唑-5-酮,并具有完全的区域和立体控制能力。