13C NMR as a general tool for the assignment of absolute configuration
作者:Iria Louzao、José Manuel Seco、Emilio Quiñoá、Ricardo Riguera
DOI:10.1039/c0cc02774j
日期:——
(13)C NMR, alone or in combination with (1)H NMR, allows the assignment of the absolute configuration of chiral alcohols, amines, carboxylic acids, thiols, cyanohydrins, sec,sec-diols and sec,sec-aminoalcohols, derivatized with appropriate chiral auxiliaries. This extends the assignment possibilities of NMR to fully deuterated and to nonproton containing compounds.
Designing chiral derivatizing agents (CDA) for the NMR assignment of the absolute configuration: a theoretical and experimental approach with thiols as a case study
作者:Silvia Porto、Emilio Quiñoá、Ricardo Riguera
DOI:10.1016/j.tet.2013.10.077
日期:2014.5
successful chiralderivatizingagents (CDAs) for the NMRassignment of absoluteconfiguration is described. The design of the most efficient arylalkoxyacetic acid reagent for the assignment of chiral thiols is taken as example. The importance of theoretical calculations in the discovery of the conformational preference of modelled arylmethoxyacetic acid (AMAA) thioesters is stressed, as well as NMR experiments