One-pot asymmetric synthesis of 2-aryl-2,3-dihydro-4-quinolones catalyzed by amino acid-derived sulfonamides
作者:Haixing Zheng、Qi Liu、Saishuai Wen、Hua Yang、Yiming Luo
DOI:10.1016/j.tetasy.2013.05.028
日期:2013.8
approach to the asymmetricsynthesis of 2-aryl-2,3-dihydro-4-quinolones using amino-acid derived sulfonamides as organocatalysts, which can be easily prepared starting from l-proline, l-alanine, and l-phenylalanine, has been developed in high yields (up to 92%) and with moderate to good enantioselectivities (up to 74% ee). Additionally, opposite enantioselectivities for primary and secondary amino acid sulfonamides
Organocatalytic one-pot asymmetric synthesis of 2-aryl-2,3-dihydro-4-quinolones
作者:Gao-Fei Pan、Li Su、Yan-Lei Zhang、Shi-Huan Guo、Yong-Qiang Wang
DOI:10.1039/c6ra01247g
日期:——
A highly efficient organocatalyticone-pot enantioselective synthesis of (R)-2-aryl-2,3-dihydro-4-quinolones from o-aminoacetophenones and aryl aldehydes has been developed. The approach is characterized by being metal free, solvent free and protecting group free. A variety of 2-aryl-2,3-dihydro-4-quinolones could be obtained in good yields up to 99% ee.