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Stereochemistry of 3-arylideneflavanones and their thio analogues by the use of 3J(CH) couplings

✍ Scribed by Gábor Tóth; Åron Szöllösy; Albert Lévai; György Oszbach; Wolfgang Dietrich; Harald Kühne


Book ID
102529560
Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
310 KB
Volume
29
Category
Article
ISSN
0749-1581

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✦ Synopsis


Abstract

The application of the ^3^J(HCXC) couplings in 3‐arylideneflavanones and 3‐arylidenethioflavanones allows a semi‐quantitative estimation of the conformational equilibrium.


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The 13C,H coupling constants in structur
✍ Pertti Äyräs 📂 Article 📅 1977 🏛 John Wiley and Sons 🌐 English ⚖ 182 KB 👁 1 views

## Abstract The vicinal ^3^__J__(CH~3~CCH) coupling constants were determined for a number of propylene derivatives and compared with the ^3^__J__(HCCH) couplings of the corresponding ethylenes. A linear regression analysis yielded the correlation ^3^__J__(CH) = 0.46 ×^3^ __J__(HH)+1.58 Hz, the c