G. Uccellobarretta et al., PERMETHYLATED CYCLODEXTRINS AS CHIRAL SOLVATING AGENTS FOR THE DETERMINATION OF THE ENANTIOMERIC COMPOSITION OF APOLAR SUBSTRATES BY NMR, Gazzetta chimica italiana, 127(7), 1997, pp. 383-386
The efficiency of hexakis(2,3,6-tri-O-methyl)-alpha-cyclodextrin (TRIM
EA) and heptakis(2,3,6-tri-O-methyl)-beta-cyclodextrin (TRIMEB) as CSA
s for the determination by NMR of the enantiomeric composition of tris
ubstituted allenes and aromatic hydrocarbons has been compared in CD3O
D as solvent: their complementary use allows the analysis of a large r
ange of substrates to be carried out.