mixture [a Lewis acid, Ti(Oi-Pr)4, and a water scavenger, 1-(trimethylsilyl)-2-pyrrolidinone] and a simple reductant (NaBH4) provides an efficient one-pot approach to parallel synthesis of secondary amines by the reductive amination of ketones. The approach demonstrated its applicability to a variety of substrates with different degree of hindrance of an amino or a carbonyl group affording products in moderate
摘要 缩合混合物[路易斯酸,Ti(O i -Pr)4和除水剂1-(三甲基甲硅烷基)-2-吡咯烷酮]和简单的还原剂(NaBH 4)的组合提供了一种有效的一锅法通过酮的还原胺化平行合成仲胺。该方法证明了其可适用于具有不同程度的氨基或羰基受阻程度的多种底物,从而以中等至高产率提供产物。 缩合混合物[路易斯酸,Ti(O i -Pr)4和除水剂1-(三甲基甲硅烷基)-2-吡咯烷酮]和简单的还原剂(NaBH 4)的组合提供了一种有效的一锅法通过酮的还原胺化平行合成仲胺。该方法证明了其可适用于具有不同程度的氨基或羰基受阻程度的多种底物,从而以中等至高产率提供产物。
Sulfonyl Fluorides as Alternative to Sulfonyl Chlorides in Parallel Synthesis of Aliphatic Sulfonamides
作者:Andrey V. Bogolubsky、Yurii S. Moroz、Pavel K. Mykhailiuk、Sergey E. Pipko、Anzhelika I. Konovets、Irina V. Sadkova、Andrey Tolmachev
DOI:10.1021/co400164z
日期:2014.4.14
types of aliphaticsulfonylhalides (Cl versus F) were compared in parallel synthesis of sulfonamides derived fromaliphatic amines. Aliphaticsulfonyl fluorides showed good results with amines bearing an additional functionality, while the corresponding chlorides failed. Both sulfonylhalides were effective in the reactions with amines having an easily accessible amino group. Aliphaticsulfonyl chlorides