Thermal Effects in the Organocatalytic Asymmetric α-Amination of Disubstituted Aldehydes with Azodicarboxylates: A High-Temperature Organocatalysis
作者:Thomas Baumann、Michael Bächle、Caroline Hartmann、Stefan Bräse
DOI:10.1002/ejoc.200701167
日期:2008.5
This article describes the thermally accelerated organocatalytic α-amination of disubstituted aldehydes with azodicarboxylates under microwave conditions. Compared to the results previously obtained at room temperature, both yield and enantioselectivity could be significantly increased. Employing microwave irradiation resulted in a considerably reduced reaction time. Therefore, this improved protocol
这篇文章描述了在微波条件下双取代醛与偶氮二羧酸酯的热加速有机催化 α-胺化。与先前在室温下获得的结果相比,产率和对映选择性都可以显着提高。采用微波辐射导致反应时间显着减少。因此,这种改进的协议允许快速有效地合成 α,α-二取代氨基醛,并为迄今为止二取代醛的 α-胺化提供了最佳结果。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)