Chemoselective Reductive Amination of Aldehydes and Ketones by Dibutylchlorotin Hydride-HMPA Complex
作者:Toshihiro Suwa、Erika Sugiyama、Ikuya Shibata、Akio Baba
DOI:10.1055/s-2000-6273
日期:——
Reductive amination of various aldehydes and ketones has been performed effectively by pentacoordinate chloro-substituted tin hydride complex, Bu2SnClH-HMPA. The tin reagent worked particularly well for the case using weakly basic aromatic amines as starting substrates. Stoichiometric amounts of a substrate and a reducing agent were adequate for the reaction. The Sn-Cl bond in the complex plays an
通过五配位氯取代的氢化锡络合物 Bu2SnClH-HMPA 可以有效地进行各种醛和酮的还原胺化。锡试剂在使用弱碱性芳香胺作为起始底物的情况下效果特别好。化学计量量的底物和还原剂足以进行反应。配合物中的 Sn-Cl 键在亚胺形成和随后的还原两个步骤中都起着重要作用。无论起始羰基和胺中的其他官能团如卤素、碳-碳双键和羟基如何,都可以实现羰基的高度化学选择性还原。