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Lanthanide induced shift difference of diastereotopic protons

✍ Scribed by Patrick S. Mariano; Rossanne McElroy


Publisher
Elsevier Science
Year
1972
Tongue
French
Weight
198 KB
Volume
13
Category
Article
ISSN
0040-4039

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✦ Synopsis


In a recent cotmaunication by Pirkle and co-workers2, the use of chiral solvents and lanthanide shift reagents to distinguish nmso from d or 1 diastereonmric epoxides was described; a dramatic difference between the lanthanide induced shift of the mathlne protons In the meso cis-2,3--


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Praseodymium(II1) tris(dipiva1omethanato) [Pr(DPM),] reduces the complex overlapping aromatic absorptions in the proton NMR spectrum of a monosubstituted naphthalene, cis-3-(1- naphthyl)-l,3,5,5-tetramethylcyclohexan-l-ol(l) to a virtually first-order pattern, whereas Eu(DPM), at the same and higher