Simple chiral derivatisation protocols for NMR analysis of the enantiopurity of 1,2-diphenylethane-1,2-diamine and N-Boc-cyclohexane-1,2-diamine
作者:Andrew M. Kelly、Steven D. Bull、Tony D. James
DOI:10.1016/j.tetasy.2008.01.026
日期:2008.3
Practically simple three-component chiral derivatisation protocols for determining the enantiopurity of vicinal C2-symmetric diamines by 1HNMRspectroscopicanalysis are described. This involves the treatment of 1,2-diphenylethane-1,2-diamine or N-Boc-cyclohexane-1,2-diamine with 2-formylphenylboronic acid and enantiopure BINOL, which afford mixtures of diastereoisomeric boronate esters whose ratio
描述了通过1 H NMR光谱分析确定邻位C 2对称二胺对映体纯度的实用简单的三组分手性衍生方案。这涉及用2-甲酰基苯基硼酸和对映纯BINOL处理1,2-二苯乙烷-1,2-二胺或N -Boc-环己烷-1,2-二胺,得到对映体纯的硼酸酯的混合物,其比例可准确反映母体二胺的对映体纯度。