25615-91-2Relevant academic research and scientific papers
The Chemistry of Carbazole. VI. On the Formation of N-Ethylcarbazoles in the Cadogan Reaction
Tsunashima, Yutaka,Kuroki, Masatane
, p. 315 - 318 (2007/10/02)
Reaction of 2',6-dimethyl-2-nitrobiphenyl with triethyl phosphite gave 4,5-dimethyl-9-ethylcarbazole besides 4,5-dimethylcarbazole.In this reaction, 4,5-dimethylcarbazole was ethylated by triethyl N-(2',6-dimethylbiphenyl-2-yl)phosphorimidate and diethyl N-(2',6-dimethylbiphenyl-2-yl)phosphoramidate, which arose from a nitrene-intermediate and triethyl phosphite.Analogous ethylations of carbazole with other phosphorimidate and phosphoramidates were investigated.
A nitrogen-15 nuclear magnetic resonance study of N-aryl phosphoramidates and phosphorimidates
Buchanan, G. W.,Morin, F. G.,Fraser, R. R.
, p. 2442 - 2446 (2007/10/02)
15N nuclear magnetic resonance chemical shifts and one-bond 15N-31P couplings are reported for a series of five N-arylphosphoramidates and four N-arylphosphorimidates.Results are interpreted in terms of an extensively delocalized N lone pair in the phosphoramidates, with p?-p? donation into the aromatic ring being dominant over p?-d? donation from nitrogen to phosphorus.
