β Scribed by T. Sandreczki; D. Ondercin; R.W. Kreilick
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Nitrogenβ15 NMR spectra of 11 ketenimines have been taken both at the naturalβabundance level of ^15^N and with the aid of ^15^Nβlabeling. The nitrogen chemical shifts are substantially different from those of neutral imines and are upfield, more like those of protonated imines. The res
The =C chemical shifts of a series of isoflavones having hydroxy, acetoxy, methoxy and methylenedioxy substituents are compared. Some general relationships between substitution patterns and chemical shifts, useful for the identitication of naturally occurring isoflavones, are outlined.
## Abstract The nuclear magnetic resonace spectra of six pyridocyanines, four azapyridocyanines, one monoquaternized 2,4β²βdipyridylamine and two dipyridylamines were measured and fully analyzed. The spectra of the 2,2β²βpyridoβ and azapyridocyanines support previously published results that these dy