Investigation of the Enantioselective Synthesis of 2,3-Dihydroquinazolinones Using Sc(III)-inda-pybox
摘要:
Derivatives of 2,3-dihydroquinazolinones (2,3-DHQZs) are prized for their prevalent pharmaceutical applications. Although there are potential applications, methods available for the enantioselective synthesis of these valuable compounds are scarce, since the chiral aminal center is prone to racemization. We have overcome the difficulties in the catalytic enantioselective synthesis of 2,3-DHQZs using Sc(III)-inda-pybox as a catalyst, in a process with a broad substrate scope.
Synthesis of 2-Arylquinazolin-4(3<i>H</i>)-one Derivatives Catalyzed by Iodine in [bmim<sup>+</sup>][ ]
作者:Xiang-Shan Wang、Ke Yang、Mei-Mei Zhang、Chang-Sheng Yao
DOI:10.1080/00397910903318609
日期:2010.8.5
Controlling selectivity of the reactions of aromatic aldehydes and 2-aminobenzamide in ionicliquidcatalyzed by iodine at either room temperature or at 80 °C under nitrogen resulted in the synthesis of (E)-Schiff bases, 2,3-dihydro-2-arylquinazolin-4(1H)-one and 2-arylquinazolin-4(3H)-onederivatives, in excellent yields.
在室温或 80 °C 氮气氛下,控制芳香醛和 2-氨基苯甲酰胺在碘催化的离子液体中反应的选择性导致合成(E)-席夫碱、2,3-二氢-2-芳基喹唑啉-4(1H)-one 和 2-芳基喹唑啉-4(3H)-one 衍生物,产率极好。