Synthesis of 2-Arylethylamines by the Curtius Rearrangement
摘要:
2-Arylethylamine derivatives were synthesized using the Curtius reaction and with three different methods of preparing the acyl azide functional group. Carbamates derived from isocyanate were convenient protecting groups for alkylation of amines. Starting from benzaldehyde, amphetamine was prepared in three steps through an oxazolidin-2-one intermediate in 62% overall yield.
<i>N</i>-Methylation and Trideuteromethylation of Amines via Magnesium-Catalyzed Reduction of Cyclic and Linear Carbamates
作者:Marc Magre、Marcin Szewczyk、Magnus Rueping
DOI:10.1021/acs.orglett.0c00988
日期:2020.4.17
A new reduction of carbamates to N-methyl amines is presented. The magnesium-catalyzed reduction reaction allows the conversion of cyclic and linear carbamates, including N-Boc protected amines, into the corresponding N-methyl amines and amino alcohols which are of significant interest due to their presence in many biologically active molecules. Furthermore, the reduction can be extended to the formation
Verfahren zur Herstellung von aminosubstituierten Thioethern
申请人:BAYER AG
公开号:EP0632022A2
公开(公告)日:1995-01-04
Verbindungen der Formel (I)
werden hergestellt durch Umsetzung von 2-Mercaptoethanol mit Verbindungen der allgemeinen Formel (II)
wobei die Substituenten die in der Beschreibung angegebene Bedeutung haben.
式 (I) 的化合物
通过 2-巯基乙醇与通式(II)化合物反应制备
其中,取代基的含义见说明。
2-Oxazolidinones from an N-dealkylation reaction of phosgene with dialkylaminoalkanols. Isolation and reactivities of an N-acyl quaternary ammonium intermediate