Stereoselective Synthesis of Trifluoromethylated Vicinal Ethylenediamines with α-Amino <i>N</i>-<i>tert</i>-Butanesulfinimines and TMSCF<sub>3</sub>
作者:G. K. Surya Prakash、Mihirbaran Mandal
DOI:10.1021/ja020482+
日期:2002.6.1
from alpha-amino acids) with Ellman's (R)-N-tert-butanesufinamide without any racemization, and these were trifluoromethylated with TMSCF3 and TMAF (tetramethylammonium fluoride) to the corresponding vicinal ethylenediamines derivatives. Imines derived from l-amino acids gave exclusively one diastereomer with a very high yield.
可分离的 α-氨基 N-叔丁烷亚胺是通过 Reetz 的 α-氨基醛(由 α-氨基酸制备)与 Ellman (R)-N-叔丁烷亚磺酰胺在没有任何外消旋化的情况下缩合制备的,并且这些用 TMSCF3 和TMAF(四甲基氟化铵)到相应的邻位乙二胺衍生物。源自l-氨基酸的亚胺仅以非常高的产率产生一种非对映异构体。