Organocatalytic Asymmetric Synthesis of 3,3-Disubstituted 3,4-Dihydro-2-quinolones
作者:Soumendranath Mukhopadhyay、Utpal Nath、Subhas Chandra Pan
DOI:10.1002/adsc.201700655
日期:2017.11.23
The first organocatalytic asymmetric reaction employing 3,4-dihydro-2-quinolone has been developed leading to the synthesis of biologically important 3,3-disubstituted-dihydro-2-quinolones. Cinchona alkaloid derived bifunctional amino-thiourea catalysts were found to be the best catalysts. The products were obtained in high enantio- and good diastereoselectivities and also few synthetic transformations
已经开发了使用3,4-二氢-2-喹诺酮的第一有机催化不对称反应,从而导致了生物学上重要的3,3-二取代-二氢-2-喹诺酮的合成。发现金鸡纳生物碱衍生的双官能氨基-硫脲催化剂是最好的催化剂。得到的产物具有高对映体和良好的非对映选择性,也已证明了很少的合成转化。