A. Moreno et al., DETERMINATION OF THE STEREOCHEMISTRY OF 4 SPIRODIASTEREOISOMERS BY ONE-DIMENSIONAL AND 2-DIMENSIONAL NOE STUDIES, Magnetic resonance in chemistry, 34(1), 1996, pp. 52-58
The stereochemistries of four cycloadducts obtained by 1,3-dipolar rea
ctions were investigated with one- and two-dimensional NMR techniques,
Analysis of a series of homonuclear NOE difference spectra and COSY a
nd NOESY spectra recorded in a variety of solvents and at various temp
eratures allowed the determination of the full stereochemistry of each
adduct.