## Carbon -13 NMR Spectra of lsocoumarin, N-Methyl-l(2H)-isoquinolinone and Related Compounds The 13C NMR spectra of isocoumarin, Kmethyl-I (PH)-isoquinolinone and 14 of their 3and/or 4-substituted derivatives were measured and assigned with the aid of various spectral techniques. The values of th
The NMR spectra of N,N-dimethyl 2,2-dichloro-1,1-difluoroethylphosphonamidous chloride and related compounds
β Scribed by H. Goldwhite; D.G. Rowsell
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 666 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-2852
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π SIMILAR VOLUMES
15 N NMR data of a series of 3-alkyl[aryl] substituted 5-trichloromethyl-1,2-dimethyl-1H-pyrazolium chlorides (where the 3-substituents are H, Me, Et, n-Pr, n-Bu, n-Pe, n-Hex, (CH 2 ) 5 CO 2 Et, CH 2 Br, Ph and 4-Br-C 6 H 4 ), are reported. The 15 N substituent chemical shifts (SCS) parameters are d
## REFERENCE DATA carbons, for various substituent groups and positions were carried out by gated decoupling with NOE. ## RESULTS AND DISCUSSION The I3C NMR chemical shifts of the compounds are shown in Tables 123; 'J(CH) and long-range coupling constants of 2, 9, 13 and 18, measured by gated d
The M y proton-coupled 15N NMR spectra of pyrimidine with natural isotope abundance and of bis-labelled [1,3-"N2]p~dine, obtained using single pulse experiments, are described. The "N and 'H spectra are analysed for "J, 'J and 4J(NH) as well as N,N and H,H coupling constants.
Bamers to rotation about the partial double C-N' bond were determined from line shape analysis of 'H and I3C dynamic NMR spectra of N',N'-dimethyl-NZ-substituted phenylacetamidines with twelve different substituents on the phenyl ring. The values of AGGc are 51.2-58.7 kJ mol-' and the correlation wi