## Abstract The OH chemical shift of the enol form of nitromalonamide is found at 18.9 ppm both in DMSO‐__d__~6~ and in DMF‐__d__~7~ indicating a very strong hydrogen bond. The OH chemical shift is insensitive to temperature changes. Contrary to the large OH chemical shift, a small two‐bond deuteri
Deuterium-induced isotope effects on the 13 C chemical shifts of α- d -glucose pentaacetate
✍ Scribed by Pérez-Hernández, Nury; Álvarez-Cisneros, Celina; Cerda-García-Rojas, Carlos M.; Morales-Ríos, Martha S.; Joseph-Nathan, Pedro
- Book ID
- 120084127
- Publisher
- John Wiley and Sons
- Year
- 2013
- Tongue
- English
- Weight
- 652 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.3918
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Exchange of amide protons with deuterium results in changes of 13 C chemical shifts for carbon atoms near the site of substitution (CH{N and N{C|O). There is a measurable decrease in the isotopic shifts of CH{N for cycloalkylacetamides as ring size increases from 3 to 8 and for lactams as ring size
## Abstract A series of intramolecularly hydrogen‐bonded enamines, enols and enethiols with ester carbonylic, ketonic carbonylic, thioester carbonylic, nitro and sulphoxide acceptors were investigated to obtain ^13^C chemical shifts and deuterium isotope effects. Results from 33 new compounds and s
17O chemical shifts were measured in 40 enamines activated in the b-position by CxO, COO, NO 2 , SO and groups. Data for the oxygen-containing series of o-hydroxyacyl aromatics are also included for com-SO 2 parison. Intramolecular hydrogen bonding in the enamines is discussed in terms of the accept