A new method of deoxygenation of amine oxides with tin reagents is proposed. It utilizes the reductive properties of the tin-tin bond in hexabutyldistannane or 1,2-dichlorotetrabutyldistannane. Oxides of tertiary amines are reduced into amines by hexabutyldistannane in high yields, whereas pyridine N-oxides react cleanly with 1,2-dichlorotetrabutyldistannane to give the corresponding pyridines. These reactions occur under mild conditions and are very selective.
提出了一种使用
锡试剂对胺氧化物进行脱氧的方法。该方法利用了六丁基二
锡或1,2-二
氯四丁基二
锡中
锡-
锡键的还原特性。
三乙胺氧化物在六丁基二
锡的作用下高效还原为胺,而
吡啶N-氧化物与1,2-二
氯四丁基二
锡反应生成相应的
吡啶。这些反应在温和条件下进行,且具有很高的选择性。