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。