Several chiralaminoalcohols have been synthesized conveniently and effectively. 1H NMR was utilized to investigate their enantiodiscriminating abilities. Chiralaminoalcohols 2 and 4 were discovered as efficient CSAs for the determination of the enantiomeric compositions of chiral carboxylic acids. In particular, for the Ts-derivatives of amino acids studied herein, 4 could be used for the assignment
方便有效地合成了几种手性氨基醇。1 H NMR用于研究其对映体分辨能力。发现手性氨基醇2和4是测定手性羧酸对映体组成的有效CSAs。特别地,对于本文研究的氨基酸的Ts衍生物,可以使用4通过其NH(Ts )具有一定信心的质子。
New chiral auxiliaries derived from (S)-α-phenylethylamine as chiral solvating agents for carboxylic acids
作者:Wenge Wang、Fengnian Ma、Xiumin Shen、Cong Zhang
DOI:10.1016/j.tetasy.2007.03.030
日期:2007.4
The two new diastereoisomeric chiral auxiliaries 1a and 1b were synthesized conveniently and effectively. 1H NMR was employed to investigate their chiral recognition ability. Compared with (S)-PEA, these newchiral auxiliaries exhibited better enantioselectivity towards the carboxylicacids we had chosen.
方便有效地合成了两个新的非对映异构手性助剂1a和1b。1 H NMR用于研究它们的手性识别能力。与(S)-PEA相比,这些新的手性助剂对我们选择的羧酸表现出更好的对映选择性。