Synthesis and applications of exo N-((1R,2R,4R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl)benzamides as NMR solvating agents for the chiral discrimination of 1,1′-binaphthyl-2,2′-diyl hydrogenphosphates and α-substituted acids
作者:Jayaraman Kannappan、Nilesh Jain、Ashutosh V. Bedekar
DOI:10.1016/j.tetasy.2015.08.008
日期:2015.10
screened as chiral solvating agents to discriminate the isomers of 1,1′-binaphthyl-2,2′-diyl hydrogenphosphates by 31P NMR analysis. A linear relationship between the experimental and calculated enantiomeric purity was established indicating the potential use of the system to determine the ee for samples of this acid of unknown enantiomeric purity. The amides were also screened for chiral discrimination
从(R)-异冰片胺制备了一系列exo N -((1 R,2 R,4 R)-1,7,7-三甲基双环[2.2.1]庚-2-基)苯甲酰胺并筛选为手性通过31 P NMR分析区分1,1'-联萘-2,2'-二烷基磷酸氢盐的异构体的溶剂化剂。建立了实验和对映体纯度之间的线性关系,表明该系统可能用于确定未知对映体纯度的这种酸的样品的ee。还通过19 F NMR分析筛选了酰胺,以对某些α-取代的酸进行手性鉴别。