Facile transformation of 3,4-disubstituted 2-azetidinones to chiral 5,6-dihydro-2-pyridones
作者:Hyeon Kyu Lee、Jong Soo Chun、Chwang Siek Pak
DOI:10.1016/s0040-4039(01)00470-1
日期:2001.5
Chiral 5,6-disubstituted-5,6-dihydro-2(1H)-pyridones were prepared efficiently from readily accessible 3,4-disubstituted-2-azetidinones having preadjusted substituents and stereochemistry through the reductive ring opening of 2-azetidinones followed by Z-selective installation of acetate moiety and re-cyclization to 2-pyridones.
通过具有预先调整的取代基和立体化学的容易获得的3,4-二取代-2-氮杂环丁酮,通过2-氮杂环丁酮的还原性开环,有效地制备了手性5,6-二取代-5,6-二氢-2(1 H)-吡啶酮通过Z-选择性安装乙酸酯部分并再环化成2-吡啶酮。