Substituent effects on the NMR spectra of substituted acetanilides and phenylureas
โ Scribed by C.Janet Giffney; Charmian J O'Connor
- Publisher
- Elsevier Science
- Year
- 1975
- Weight
- 289 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The mass spectra of a series of mefa-and para-substituted phenyl acetates have been examined. Substituent effects have been correlated with A(AP-IP) values and by using the Harrison and Chin approach. The bond-cleavage and rearrangement reactions of phenyl acetates are compared with the correspondin
## Abstract ^1^H NMR spectra of 26 substituted chalcones (3โarylโ1 phenylโ2โpropeneโ1โones and 1โarylโ3โphenylโ2โpropeneโ1โones) have been studied. The chemical shifts of the ฮฑ and ฮฒ protons to the carbonyl group were correlated with Hammett sฬ parameters. To gain information on the effect of the t
Aromatic I3C chemical shifts of 4-and hubstituted pyridine N-oxides in aprotic and protic solvents are reported and discussed. Changes in chemical shifts caused by hydrogen bonding and protonation are much smaller than those induced by a substituent, and are not related to the pK, values of N-oxides
## Abstract ^13^C FT NMR spectra of ethyl __cis__โ2โsubstituted cyclopropanecarboxylates were obtained in chloroformโ__d__ and the chemical shifts were compared with those of the corresponding __trans__ isomers. In most cases, the resonances for the ring carbons and the carbonyl group carbon appear