Chiral nuclear magnetic resonance solvating agents. Resolution, determination of enantiomeric purity, and assignment of absolute configuration of cyclic and acyclic sulfinate esters
The halogen-metal exchange reaction between perfluoro-n-heptyl iodide and n-butyllithium
作者:Peter Johncock
DOI:10.1016/s0022-328x(00)85296-1
日期:1969.10
diethyl ether/pentane undergo 40–50% halogen-metalexchange below −90° and form a stable heterogeneous system. The stability of the perfluoro-n-heptyllithium present is attributed to its association with perfluoro-n-heptyl iodide. Such a mixture reacts only slowly with acetaldehyde below −90° to give a low yield of 1-(perfluoro-n-heptyl)ethanol. Halogen-metalexchange is complete in the presence of a sufficient
Chiral nuclear magnetic resonance solvating agents. Resolution, determination of enantiomeric purity, and assignment of absolute configuration of cyclic and acyclic sulfinate esters