Abstract Efficient N‐nitrosation of amines, amides, and ureas, and also S‐nitrosation of thiols were performed with dinitrogentetroxide impregnated on activated charcoal (N2O4/charcoal) in CH2Cl2 at room temperature. High selectivity was observed for N‐nitrosation of dialkyl amines, N‐alkylamides and N‐alkylureas. Dealkylation and N‐nitrosation of trialkylamines were also performed by this reagent
Thiol Oxidation by 1,2,3-Oxadiazolinium Ions, Presumed Carcinogens
作者:Richard N. Loeppky、Aloka Srinivasan
DOI:10.1021/tx00048a001
日期:1995.9
behavior of these compounds toward typical "cellular nucleophiles". Each of these substances oxidizes benzenethiol to diphenyldisulfide. The reaction in aqueous buffer at pH 7.4 is rapid. Reaction of 1b with benzenethiol gives, in addition to the disulfide, benzene, biphenyl, azobenzene, diphenylsulfide, aniline, and glycolaldehyde. Similar products are obtained from 3. Phenyldiazene is postulated as