Novel Synthesis of <i>g</i><i>em</i>-Dichloroaziridines from Imines via the KF/Al<sub>2</sub>O<sub>3</sub>-Promoted Generation of Dichlorocarbene from Chloroform
KF/Al2O3 was found to be an efficient base for the reaction of imines with chloroform in acetonitrile to give gem-dichloroaziridines 2 in moderate to high yields. The KF/Al2O3-promoted dichloroaziridination can be carried out with simple workup, tolerates a variety of functional groups present in the imines, and proceeds smoothly with a smaller amount of carbene source.
发现KF / Al 2 O 3是亚胺与氯仿在乙腈中反应以中等至高收率得到宝石-二氯氮丙啶2的有效碱。可以通过简单的后处理进行KF / Al 2 O 3促进的二氯叠氮基化,耐受亚胺中存在的各种官能团,并使用较少量的卡宾源平稳地进行。