## Abstract Fourier transform carbon‐13 nuclear magnetic resonance spectra have been obtained and interpreted for some 2‐substituted tetrahydropyrans. The effects of the substituents on α, β, γ and δ‐carbon atoms are discussed. Using suitable reference compounds the γ‐parameter can be used for quan
The 13C nuclear magnetic resonance spectra of some 2-, 6-, and 2,6-substituted purines
✍ Scribed by Martha C Thorpe; W.C Coburn Jr.; John A Montgomery
- Publisher
- Elsevier Science
- Year
- 1974
- Weight
- 971 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Carbon‐13 n.m.r. spectra have been obtained for some methyl and phenyl substituted 2__H__‐azirines. The higher field resonance of C‐2 than that of the corresponding aziridine carbon is interpreted in terms of ring strain. Substituent effects on the chemical shifts of the azirine ring ca
## Abstract The conformations in solution of 6‐phenyltetrahydropterin, 6,7‐diphenyltetrahydropterin and 6‐7, dimethyltetrahydropterin have been determined from their proton magnetic resonance spectra. The 6‐phenyltetrahydropterin has the reduced pyrazine ring in a half chair conformation with the p
## Abstract ^13^C NMR spectra of friedelan, friedelan‐21‐one, friedelan‐6‐one, friedelane‐321‐dione, friedelane‐3,6‐dione and friedelane‐3,6,21‐trione have been recorded and signals assigned using off‐resonance decoupling, inversion recovery and lanthanide induced shift techniques.