β Scribed by Louis D. Quin; Michael D. Gordon; Shin Ok Lee
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Carbonβ13 chemical shifts of fourteen __para__βsubstituted benzylbenzenes have been determined. The relative substituent chemical shifts (SCS) of the methylene carbons and the aromatic ring carbons (Cβ4, Cβ1β² and Cβ4β²) correlated well with the Hammett substituent effects using the dual
The 13C NMR spectra have been determined of: (i) aliphatic compounds having at one end a functionalized sulphur atom (-SH, -S-, -SMe, -S(O)Me, -SO,Me and -S-'Me,) and (ii) saturated sulphur heterocycles variously substituted at the S-atom (\S, \SO '\SO, and 'xS Me). The results are discussed in term
Using a topological parameter, A,, to characterize the effects of a variable mono-or polyalkyl environment, R, on widely varied types of "C sites gives rise to a homogeneous description of their chemical shifts over the entire range of 613C variation (220 ppm/TMS). The proposed model, 613C= w,A,+q,
## Abstract ^13^C NMR spectra of six epimeric substituted 4βhydroxypiperidines and two corresponding piperidines were recorded. Substituent parameters for equatorial methyl, __gem__βdimethyl, equatorial hydroxy and axial hydroxy groups were calculated from the ^13^C chemical shifts of these compoun