Published November 1, 1974
| public
Journal Article
Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy. Nitrogen-15 Chemical Shifts Determined from Natural-Abundance Spectra
- Creators
- Warren, John P.
- Roberts, John D.
Abstract
A number of ^(15)N chemical shifts, determined at the natural-abundance level of the isotope, are reported for some secondary alkylamines, amides, ureas, urethanes, heterocycles, and miscellaneous compounds. Substituent chemical-shift parameters have been derived for secondary-alkylamine ^(15)N chemical shifts. The ^(15)N chemical shifts of secondary alkylamines appear to be potentially useful to determine the number of carbon atoms β to the nitrogen. Effects produced by differences in stereochemistry on the ^(15)N nmr spectra of di-2-butylamine and di-2-hexylamine have been detected. Possible procedures for accounting for changes in diamagnetic shielding between pairs of compounds are discussed.
Additional Information
© 1974 American Chemical Society. Received May 23, 1974. We are grateful to Dr. R.L. Lichter for a number of useful discussions, and to Dr. B.L. Hawkins who made the modifications to the spectrometer for Fourier-transform operation. Supported by the Public Health Service, Research Grant No. GM- 11072 from the Division of General Medical Sciences, and by the National Science Foundation. Contribution No. 4892.Additional details
- Eprint ID
- 60927
- DOI
- 10.1021/j100617a017
- Resolver ID
- CaltechAUTHORS:20151008-153200168
- GM-11072
- U.S. Public Health Service (USPHS)
- NSF
- Created
-
2015-10-10Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Gates and Crellin Laboratories of Chemistry
- Other Numbering System Identifier
- 4892