Syntheses and unusual spectroscopic properties of novel ketobacteriopurpurins
โ Scribed by Andrei N. Kozyrev; Ravindra K. Pandey; Craig J. Medforth; Gang Zheng; Thomas J. Dougherty; Kevin M. Smith
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 243 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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๐ SIMILAR VOLUMES
The proton that bears a 1,3-diaxial relationship to the substituted nitrogen atom of some chiral oxaziridines appears in the NMR spectrum at unusually high field. This observation indicates that an unusual rotamer is substantially populated in these systems. We and others have been interested in th
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## Abstract magnified image Reaction of pentafluoropyridine with nucleophilic heteroaromatics such as 4โ(dimethylamino)pyridine, 4โ(pyrrolidinโ1โyl)pyridine, 4โ(morpholinโ4โyl)pyridine, 4โaminopyridine, and 3,4โdiaminopyridine resulted in the formation of 4โhetarenium substituted tetrafluoropyridi