Effect of Substituteents on the 1H and 13C NMR Chemical Shift of trans-Pyridineacrylic and Substituted trans-Cinnamic Acids
✍ Scribed by Jovanovic, Bratislav; Misic-Vukovic, Milica; Drmanic, Sasa; Csan�i, J�os
- Book ID
- 111694288
- Publisher
- Japan Institute of Heterocyclic Chemistry
- Year
- 1994
- Tongue
- English
- Weight
- 182 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0385-5414
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The complete assignment of the 1H and 13C NMR spectra of eight thienyl-substituted chromenes was achieved by the concerted application of homonuclear (gs-COSY), 1H-detected heteronuclear one-bond (gs-HMQC) and long-range (gs-HMBC) gradientselected correlation experiments.
A series of 3-and 4-X-cinnamoyl-1,3,4-thiadiazolium-2-phenylamine chlorides were prepared and fully characterized by spectroscopic techniques. The 13 C NMR chemical shifts of the a and b side-chain carbons were compared with those of the corresponding cinnamic acid precursors and more significant tr