Cascade Enantioselective Synthesis of 3-Arylphthalides Using Chiral Auxiliary Route
作者:Anil Karnik、Suchitra Kamath
DOI:10.1055/s-2008-1067098
日期:——
An enantioselective synthesis of 3-arylphthalides was achieved using ( S)-1-phenylethylamine as a chiral auxiliary. Reduction of chiral keto amides of 2-aroylbenzoic acids followed by acid-catalyzed lactonization yielded ( S)-3-arylphthalides with 75-85% ee.
使用(S)-1-苯乙胺作为手性助剂实现了3-芳基苯酞的对映选择性合成。还原 2-芳酰基苯甲酸的手性酮酰胺,然后进行酸催化内酯化,得到 (S)-3-芳基苯酞,ee 为 75-85%。