Resolution of nitrogen-centered chiral tetraalkylammonium salts: application to [1,2] Stevens rearrangements with N-to-C chirality transmission
作者:Eiji Tayama、Seijun Otoyama、Hiroyuki Tanaka
DOI:10.1016/j.tetasy.2009.10.025
日期:2009.11
The resolution of N-chiral, amino acid-derived quaternary ammonium salts is demonstrated by using chiral BINOL as a complexing agent. Determination of the enantiopurities and absolute configurations of the resolved N-chiral tetraalkylammonium salts are described. The [1,2] Stevens rearrangement of N-chiral ammonium salts is shown to proceed with N-to-C chirality transmission to afford optically active
的分辨率Ñ -手性,氨基酸衍生的季铵盐是通过使用手性BINOL作为络合剂证实。描述了确定的N-手性四烷基铵盐的对映体纯度和绝对构型。的[1,2]史蒂文斯重排ñ -手性铵盐被示出具有进行ñ -到- Ç手性传输,得到光学活性的3-取代的吗啉-2-酮衍生物。