## Abstract Vicinal ^13^C, ^1^H coupling constants were used to establish the configuration of a 3,5‐disubstituted notricyclene. The assignment procedure is supported by independent measurements of ^13^C, ^2^H coupling constants in 3‐ deuterionortricyclene and confirmed by ^1^H, ^1^H NOE data for _
Assignment of anomeric structure to carbohydrates through geminal13C-H coupling constants
✍ Scribed by K. Bock; I. Lundt; C. Pedersen
- Book ID
- 104246830
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- French
- Weight
- 162 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
An empirical projection method is described to predict the magnitudes and signs of two-bond 13C-13C spin-coupling constants (2Jcc) in aldopyranosyl rings. The method has been applied primarily to the interpretation of 2Jcc c values, although the behavior of 2Jco c has also been examined in light of
## Abstract Chemical shifts and long‐range ^13^C, ^1^H coupling constants to the two carbonyl C atoms were determined for a series of ethyl 2‐acyloxy‐2‐alkenoates. The ^3^__J__(C,H) coupling constant across the double bond is 9.5–10.1 Hz for the __E__‐ and 2.9–3.8 Hz for the __Z__‐isomer. ^3^__J__(
The sign of the scalar coupling between a carbonyl carbon and ˛-proton J(C 0 ,H ˛), for the cyclic dipeptide cyclo(Leu-Gly) was determined relative to that between an amide proton and ˛-proton 3 J(H N ,H ˛) by an E.COSYtype HSQC experiment. The pulse sequence used in this experiment gives a cross pe
## Abstract The magnitude and signs of geminal ^29^SiZ^13^C coupling constants were determined for nine derivatives of representative organosilicon compounds [Z = C(sp^2^, sp^3^), N, O, (two‐ and three‐coordinate), Si, S] from ^1^H‐detected two‐dimensional (2D) Ψ‐BIRD‐HSQC and Ψ‐BIRD‐HMQC pseudo‐