Phenyl disulfide

PhSH. This reagent affords the phenyl disulfide. ... 

Diphenyl disulfide (phenyl disulfide) [882-33-7] M 218.3, m 60.5 . Crystd from MeOH. [Alberti et al. J Am Chem Soc 108 3024 1986]. Crystd repeatedly from hot diethyl ether, then vac dried at 30° over P2O5, fused under nitrogen and re-dried, the whole procedure being repeated, with a final drying under vac for 24h. Also recrystd from hexane/EtOH soln. [Burkey and Griller 7 Am Chem Soc 107 246 1985.]... 

As well as for metalated epoxides, the trifluoromethyl moiety also proved an effective organyl-stabilizing group for metalated aziridines. Lithiated aziridine 241 reacted stereoselectively with carbonyl-containing electrophiles, and phenyl disulfide and chlorotrimethylsilane were also trapped in good yield (Scheme 5.60) [70b, 85],... 

P-Chirogenic phosphine/sulfide hybrid phosphine-boranes 80 were synthesized from the reaction between (l )-tosylates 79 [94] and sodium thiolate in DMF at ambient temperature as depicted in Scheme 12, or alternatively by a one pot synthesis consisting of the nucleophilic attack of the chirally induced hthium salt of 74 on phenyl disulfide. Both methodologies provided the desired sul-fide/phosphine boranes in excellent yields [10]. 

The initial step of the adsorption of thiols on a Mo(100) surface is the formation of adsorbed thiolate groups. Phenyl thiolate is formed upon adsorption of thiophenol at 120 K on a clean Mo(110) surface.381 The thiolate intermediate subsequently undergoes competing C-S bond hydrogenolysis to form benzene, or C-S and C-H bond scission to form surface benzyne. The adsorption of thiophenol was also studied on a sulfur-covered Mo surface382 Phenyl disulfide is formed via S-H bond scission and S-S bond formation. The S-S linkage is oriented perpendicular and the phenyl ring parallel to the surface. 

Rhodococcus strain SY1 was reported to desulfurize dimethyl sulfide, dimethyl sulfoxide, and several alkyl sulfonates [41] in addition to DBT [78], Barium chloride has been used to precipitate sulfate and shown to alleviate sulfate repression partially. The authors proposed a tentative pathway for oxidative removal of sulfur from DBT and other organosulfur compounds. It should be noted that phenyl disulfide and thianaph-thene were not desulfurized by any of the Rhodococcus strains, but have been reported to be substrates of Gordonia CYKS2. 

A 1-1., four-necked, round-bottomed flask equipped with reflux condenser, sealed stirrer, thermometer, and solid addition funnel and protected from atmospheric moisture with a Drierite guard tube is carefully dried and flushed with a dry inert gas (Note I). The flask is charged with 453 g. (3.1 moles) of silver difluoride (Note 2) and 500 ml. of l,l,2-trichloro-l,2,2-trifluoroethane (Note 3), and phenyl disulfide (100 g., 0.458 mole) (Note 4) is weighed into the solid addition funnel. The stirrer is started, and phenyl disulfide is added to the slurry in small portions. An exothermic reaction occurs, and after the addition of several portions the reaction mixture reaches a temperature of 40° (Note 5). By intermittent use of a cooling bath and by adjusting the rate of addition of the disulfide, the reaction temperature may be maintained between 35° and 40°. The addition of the phenyl disulfide requires 45-60 minutes. On completion of the addition the suspension of black silver difluoride has been converted to yellow silver monofluoride, and the exothermic reaction gradually subsides. The reaction mixture is stirred for an additional 15-30 minutes without external cooling and then quickly heated to reflux. 

Diphenyl-1,3-butadiene, 40, 36 Diphenylcarbodiimide, 43,31 Diphenyl disulfide, set Phenyl disulfide Diphenyl ketimine, 44, 51 Diphenylmethylenimine, 44, 51 oe,j8-DlPHENYLPROPIONIC ACID, 40, 38 Dipotassium l, 8-naphthalenedicarbox-... 

Sebacic acid, 43, 39 Sebacoyl chloride, 43, 37 2,2 -SebacoyldicycIohexanone, 43, 34 Silver difluoride, reaction with phenyl disulfide, 44, 82 Silver monofluoride, 44, 82 Sodium amide, as catalyst for carbona-tion of methylacetylene, 42, 98 for formation of sodium sodiophenyl-acetate, 40, 38... 

Eastman s white label grade phenyl disulfide is suitable. 

Caution must be exercised in the addition of the phenyl disulfide. There is a short induction period between the addition of disulfide and the exothermic reaction. If the disulfide is added too rapidly, a vigorous exothermic reaction, which is difficult to... 

In aqueous solvent a hydrophobic environment was constructed by using a water-soluble and hydrophobic tri-block copolymer (Scheme 7). The central block is hydrophobic and composed of the copolymer of styrene and N-vinylimidazole (PSI), to which Cu ions can coordinate. This central block was synthesized by UV-irradia-tion polymerization bytelechelic initiator of bis(4-carbomethoxy-phenyl)-disulfide. The reaction of telechelic block with poly-(ethyleneoxide) gave the block copolymer PE0-PSI-PE0. 

An intramolecular hetero-Diels-Alder reaction of o-thiobenzoquinone methides, generated in situ from bis(2-formyl-phenyl)disulfide and alkenols in the presence of iodine, has been used to prepare thiochromans (Scheme 22) <2003TL6513>. 

Photolysis of phenyl disulfide in various nonhydroxylic solvents under nitrogen atmosphere gives 0- and p-HSCoHiSCoHj and thiophenol. The reaction of free radicals (2C6H6S-) to give C6HsSC6H4SH is completely prevented by blocking all of the ortho- and para positions of phenyl disulfide. 177-231... 

Ni(CDC)2" (532) have been reported. Pyrolysis of Co(CDC)3" results in partial reduction of the metal ion to Co(ll) and liberation of iodobenzene and phenyl disulfide. In pyridine solution phenylation of the ligand was observed and yV-cyanodiphenyldithiocarbimate was isolated, (PhS)2C NCN. 

Cl2 was passed into a stirred suspension of bis[2-nitro-4-(trifluoromethyl)phenyl] disulfide (408 g, 0.9 mol) ill 90% HOAc at such a rate that the temperature was maintained at 50-55 C for ea. 5 h. Excess Cl2 was swept out with N2, Ihe mixture was filtered, and the filtrate was concentrated in vacuo on a steam bath. The residual oil was extracted with toluene (500mL), the extract was treated with Darco, filtered, and dried to give the crude product as a dark oil yield 434 g (81 %). 

Copper Compounds Bis(acetonitrile)chloronitropalla-dium(II)-Copper(II) chloride, 33 t-Butyllithium-Copper(I) bromide-Di-methyl sulfide, 58 Copper(II) acetate-Bis(2-amino-phenyl) disulfide, 156 Copper(II) acetate-2,2 -Dipyridyl disulfide, 156... 

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