Use of<i>N</i>,<i>N</i>′-Dimethylpropyleneurea (DMPU) as Solvent in the Efficient Preparation of Enantiomerically Pure Secondary Amines
作者:Eusebio Juaristi、Peter Murer、Dieter Seebach
DOI:10.1055/s-1993-26035
日期:——
The monoalkylation of (R)- and (S)-1-phenylethylamine proceeds readily with DMPU as the solvent. An efficient procedure was then developed for the high-yield preparation of the chiral secondary amines N-benzyl-, N-isopropyl-, N-(2-biphenylyl)methyl-, N-(diphenyl)methyl-, and N-(2,2-dimethyl)propyl-1-phenylethylamine, in enantiomerically pure form.
(R)-和(S)-1-苯乙胺的单烷基化反应在二甲基磷酰胺(DMPU)为溶剂的情况下能够顺利进行。随后,开发了一种高效的方法,用于高产率制备手性二级胺,包括N-苄基-、N-异丙基-、N-(2-联苯基)甲基-、N-(二苯基)甲基-和N-(2,2-二甲基)丙基-1-苯乙胺,这些产物以对映体纯的形式获得。