Carbon-13 NMR spectra of enriched phenobarbital, pentobarbital, and dilantin
โ Scribed by Robert C Long Jr.; J.H Goldstein
- Publisher
- Elsevier Science
- Year
- 1974
- Weight
- 478 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Carbonโ13 chemical shifts of three arylmethyl carbanions have been determined by changing solvents and counter ions. The charge distributions in the carbanions are discussed and compared with those obtained from the ^1^H chemical shifts.
## Abstract Assignments of the ^13^C NMR resonances for the toxic diterpenoids of ericaceous plants have been made. The data have proved to be a useful tool for the structural examination of the congeners. For example, the structure of asebotoxinโVII to which a 6โ__O__โacyl moiety had previously be
## Abstract Carbonโ13 NMR spectra of a number of (โ)โ__ent__โkauranoids have been studied. An unambiguous selfconsistent assignment of resonances has been made by considering the changes in chemical shifts produced by the change of substituent(s).
## Abstract Carbonโ13 NMR chemical shifts and oneโbond carbonโhydrogen coupling constants have been obtained at 15ยท09 MHz. The trends in the carbon chemical shifts obtained for the pyrazines parallel those of monosubstituted benzenes and 2โsubstituted pyridines, except for the __direct__ effect of