2.4- Dithiophenol

The 24-membered Robson-type hexaaza-dithiophenolate ligand H2L19 and its various derivatives have been utilized by Kersting and coworkers (154) as supporting ligands for metalated container molecules with a bioctahedral N3M(/i-S2)2(L )MN3 core structure (Fig. 27). The remainder of this article will now focus on... 

III. Metalated Container Molecules of Binucleating Polyaza-Dithiophenolate Macrocycles... 

The S-oxygenation of the hexaamine-dithiophenolate macrocycles should provide a potential entry into the novel class of binucleating polyamine-disulfonate and -disulfinate macrocycles. Indeed, such ligands can be prepared by the oxidation of dinuclear nickel complexes of the parent hexaaza-dithiopheno-late macrocycles followed by the decomposition of the oxidation products in acidic solution. The dinuclear nickel complexes [Nin2(L36)(L )]+ (L = Cr (70) and OAc (71)) of the hexaaza-diphenylsulfonate ligand (L36)2- (Fig. 38) are obtained by... 

When the dithiophenolate is liberated from 97 with a mol equivalent of NaOH in Me2SO, the thianthrene 98a or 98b resulted (80JOC4806). 

The dithiophenol derivative 315, prepared from the dinitro 314 via reduction, diazotization, and subsequent reaction with sulfide, under mild oxidative conditions, afforded the cyclic disulfide 310, which was converted into dioxide 316 with hydrogen peroxide or a peracid (Scheme 66) <2004W0099162>. The already known, dithiocin 310, obtained... 

BBT. See Bis (4-t-butyl-1,2-dithiophenolate)-copper-tetra-n-butyl ammonium... 

Weinstein,on the other hand, has attempted to attach antioxidants based on symmetrical dithiophenols or phenol- or amine-substituted sulphur compounds to the polymer chain during or after the polymerisation. The purpose of all such developments is to optimise the ageing resistance of standard NBR by adapting the compound to the specific requirements (see Section 6). 

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