Access to P-chiral H-phosphinates via desymmetrization of hypophosphite esters was investigated. The use of chiral auxiliaries, chiral catalysts, and of a bulky prochiral group that could lead to kinetic resolution was explored. A chiral NMR assay for enantiomeric excess determination of H-phosphinates was developed. An asymmetric route to C-chiral H-phosphinates is also examined and an assay was developed.
通过
亚磷酸酯的去对称化探索了获取P-手性H-
膦酸酯的方法。研究了使用手性助剂、手性催化剂和可能导致动力学拆分的庞大非手性基团的方法。开发了一种用于H-
膦酸酯对映体过量测定的手性NMR分析方法。还检验了一条合成C-手性H-
膦酸酯的不对称路线,并开发了相应的分析方法。