In the ^1^H and ^13^C NMR spectra of selenophene‐2‐carbaldehyde azine, the ^1^H‐5, ^13^C‐3 and ^13^C‐5 signals of the selenophene ring are shifted to higher frequencies, whereas those of the ^1^H‐1, ^13^C‐1, ^13^C‐2 and ^13^C‐4 are shifted to lower frequencies on going from the __EE__ to __ZZ__ isom
Isomers for Electrophilic Studies. Resolution of 2-Bromomercuributane, Assignment of Configuration and Cleavage of the Enantiomorphs by Bromine 1-13
✍ Scribed by Jensen, Frederick R.; Whipple, Loris D.; Wedegaertner, Donald K.; Landgrebe, John A.
- Book ID
- 126125892
- Publisher
- American Chemical Society
- Year
- 1960
- Tongue
- English
- Weight
- 577 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0002-7863
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## Abstract The preferred conformations of the four isomers of 1,2,3,4,4a,6,7,8,9,13b‐decahydro‐9a__H__‐pyrido[1,2‐__f__] phenanthridine have been determined by 270 MHz ^1^H n.m.r. and i.r. spectroscopy. N.m.r. assignments are based on the specific chemical shifts of the protons adjacent to the nit