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Chiral phenyl-substituted chalcone epoxides. I—Correlative determination of absolute configuration by 1H NMR lanthanide-induced shifts

✍ Scribed by Marie-Thérèse Langin-Lantéri; Catherine Fonbonne; Jean Huet; Michèle Petit-Ramel

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
208 KB
Volume
25
Category
Article
ISSN
0749-1581

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✦ Synopsis

The absolute configuration of an unknown 2'or 4-and (or) 4'-phenyl-substituted chalcone oxide can be predicted from the chemical shift behaviour of the 'H NMR spectrum of the substrate in the presence of the lanthanide chiral complex Eu(hfbc),.

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Enantioresolution and absolute configura
Enantioresolution and absolute configurations of chiral meta-substituted diphenylmethanols as determined by x-ray crystallographic and 1H NMR anisotropy methods
✍ Masashi Kosaka; Takeo Sugito; Yusuke Kasai; Shunsuke Kuwahara; Masataka Watanabe 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 147 KB 👁 1 views

## Abstract __meta__‐Substituted diphenylmethanols were enantioresolved by the method of chiral phthalic acid yielding enantiopure alcohols. Their absolute configurations were unambiguously determined by X‐ray crystallography of chiral phthalate esters and/or by the ^1^H NMR anisotropy method using