2,2’-dithiobis nitropyridine

ND = Not determined DTNB 2,2 -Dithiobis(5-nitropyridine) DTNP 2,2 -Dithiobis(5-nitrobenzoate) DEDC Diethyldithiocarbamate IA Iodoacetate NEM N-ethylmaleimide PCMB p-chloromercuribenzoate 1, 10-PT 1, 10-phenanthroline 8-Q 8-Quinolinol 2, 2 -BP 2, 2 -Bipyridyl. 

Kumar et al. [268] have described a similar support based on 3-mercaptopropyl CPG (SSgrnolg 1). It has been treated with 2,2 -dithiobis(5-nitropyridine) followed by the O-dimethoxytritylated mercaptoethanol to furnish the unsymmetrical disul-... 

Sulphite and thiosulphate have been determined by liquid chromatography after derivati-zation with 2,2 -dithiobis(5)nitropyridine (Vairavanmurthy and Mapper, 1990). At high levels of H2S sulphide should be precipitated with ZnCl2 Millero, 1991). 

Copper(I)-catalyzed amination of iodobenzene with aniline in the presence of KO-t-Bu as base was described by Don and co-workers [56] (Scheme 22.12). They reported the use of the [Cu2(p-I)2(L)2] (L = l,2-bis(diphenylphosphino)-c/oi 0-carborane(12) (1)) catalyst, which showed a conversion of the amine of 58%, compared to no significant conversion without ligand 1. The conversion is in the range of the reaction of copper(I) iodide in the presence of 2,2 -dithiobis(5-nitropyridine) but lower than that of the 2,2 -bipyridine ligand [57]. It was postulated that the reaction proceeds via an insertion of the copper(I) species into the carbon-halogen bond as the initial step. 

---