Organocatalyzed Aziridination of α-Branched Enals: Enantioselective Synthesis of Aziridines with a Quaternary Stereocenter
作者:Alaric Desmarchelier、Danilo Pereira de Sant'Ana、Vincent Terrasson、Jean Marc Campagne、Xavier Moreau、Christine Greck、Renata Marcia de Figueiredo
DOI:10.1002/ejoc.201100437
日期:2011.7
α-substituted-α,β-unsaturated aldehydes is described. The products were obtained in good yields (up to 86 %) and enantioselectivities (up to 90 % ee) and could rapidly be transformed under various conditions, including ring opening, to afford useful small molecules possessing not only the aziridine and aldehyde moieties but also other functionalities such as alcohol, acid, ester, or amino alcohol.
描述了从不同的 α-取代-α,β-不饱和醛开始,由二芳基脯氨醇三甲基甲硅烷基醚 [Ar = 3,5-(CF3)2C6H3] 催化的 N-甲苯磺酰氮丙啶的有机催化途径。产品以良好的收率(高达 86%)和对映选择性(高达 90%ee)获得,并且可以在各种条件下快速转化,包括开环,以提供有用的小分子,不仅具有氮丙啶和醛部分,还具有其他官能团,例如醇、酸、酯或氨基醇。