Reaction of hydrogen sulfide with

The reaction of hydrogen sulfide with aziridines in the presence of aldehydes or ketones provides a simple route to two-substituted thiazohdines (2,114-116). 

Ammonium Sulfide. Ammonium sulfide [12135-76-1/, (NH 2S> produced by the reaction of hydrogen sulfide with excess ammonia. ... 

Anhydrous gaseous or Hquid hydrogen sulfide is practically nonacidic, but aqueous solutions are weakly acid. The for the first hydrogen is 9.1 X 10 at 18°C for the second, is 1.2 x 10 . Reaction of hydrogen sulfide with one molar equivalent of sodium hydroxide gives sodium hydrosulfide with two molar equivalents of sodium hydroxide, sodium sulfide forms. Hydrogen sulfide reacts with sodium carbonate to produce sodium hydrosulfide... 

Trialkyl- and triarylarsine sulfides have been prepared by several different methods. The reaction of sulfur with a tertiary arsine, with or without a solvent, gives the sulfides in almost quantitative yields. Another method involves the reaction of hydrogen sulfide with a tertiary arsine oxide, hydroxyhahde, or dihaloarsorane. X-ray diffraction studies of triphenylarsine sulfide [3937-40-4], C gH AsS, show the arsenic to be tetrahedral the arsenic—sulfur bond is a tme double bond (137). Triphenylarsine sulfide and trimethylarsine sulfide [38859-90-4], C H AsS, form a number of coordination compounds with salts of transition elements (138,139). Both trialkyl- and triarylarsine selenides have been reported. The trialkyl compounds have been prepared by refluxing trialkylarsines with selenium powder (140). The preparation of triphenylarsine selenide [65374-39-2], C gH AsSe, from dichlorotriphenylarsorane and hydrogen selenide has been reported (141), but other workers could not dupHcate this work (140). 

The overall reaction of hydrogen sulfide with diethanol amine (Lai et al, 1985) is given by... 

Sulfur. It is not readily predictable from existing thermodynamic data that sulfur would be a poison of nickel catalysts. The action of sulfur is undoubtedly through the reaction of hydrogen sulfide with nickel, according to ... 

Yellow insoluble substances of similar composition are obtained on reaction of hydrogen sulfide with either SO2, SOCI2, or SO2CI2 and on hydrolysis of S2CI2 [87], e.g. ... 

This glutathione-dependent enzyme catalyzes the reaction of hydrogen sulfide with Fe + to produce sulfite and Fe +. 

Eq. (48)1. Several reactions of hydrogen sulfide with acetylenic esters have been studied. The reaction of hydrogen sulfide with methyl propiolate, for example, gives rise to a simple 1 2 adduct (328) [Eq. (49)]. In the presence of aromatic aldehydes, HjS reacts with... 

In 1868 Hofmann (7) reported the preparation of trithiane. This is the product obtained when the hydrogen sulfide-formaldehyde reaction is run under strongly acidic conditions. Under weakly acidic or mildly alkaline conditions, the product formed retains significant amounts of oxygen. Recently, Credali and Russo (8) have examined in depth the reaction of hydrogen sulfide with aqueous formaldehyde free of added acid or base. 

Poly(thioformaldehyde) can also be obtained by reaction of hydrogen sulfide with formaldehyde in acid media (8). Again the key intermediate is 1-hydroxy-2-oxa-4,6-dithioheptane-7-thiol. Though acid conditions favor formation of trithiane, use of a high CH20/H2S04 ratio results only in polymer formation. Credali and Russo (8) believe this to be a topochemical reaction between the dithioheptane and mercaptomethanol. 

Thioacetone was first made in 1889 by Baumann and Fromm (31). They obtained it by reaction of hydrogen sulfide with acetone in the presence of an acidic catalyst. It was a minor product detected by its very disagreeable odor. The major product was hexamethyl-s-trithiane. In more recent work (32, 33) pyrolysis of this intermediate has been developed into a preferred route to thioacetone. 

The intramolecular addition of thiols to alkenes provides a novel entry into heterocycles. One example of this is the reaction of hydrogen sulfide with various nonconjugated dienes to form six-membered rings (equation 302).549 550... 

Rare-earth sesquisulfides have generally been prepared by the reaction of hydrogen sulfide with rare-earth oxides. However, such... 

To confirm that structure I was in fact the cause of the off-odor, compound I was produced synthetically by a reaction of hydrogen sulfide with mesityloxide. Also the off-odor from the problem ham was first extracted with methanol and hexane and then concentrated. Subsequent study with GC showed the synthesized compound I (Fig. 13-4), whose structure was confirmed by MS, had the same FID retention time as the substance producing the off-odor at the end of the GC column identified by sniffing the ham extract. With this result the identity of the cat-like off-odor was explained, but not the mechanism of formation. 

The reaction of hydrogen sulfide with two equivalents of ethylmagnesium bromide in ether gives a reagent as a viscous mass , which is soluble in THF and reacts with alkyl halides in that solvent to give thioethers [16] ... 

Figure 5.8 Reactions of hydrogen sulfide with hydrogen peroxide at various pH values.

The chemiluminescence spectrum obtained from the reaction of ozone with methyl mercaptan at a pressure of 0.2 torr is shown in Figure 5. Reaction of hydrogen sulfide with dimethylsulfide with ozone give identical spectra consisting of a broad structureless band centered at approximately 370 nm (uncorrected for spectral sensitivity of the detection system). We have recently shown that this emission is identical to the fluorescence spectrum of sulfur dioxide (16). Since ozone oxidizes hydrogen sulfide to sulfur dioxide and water in the gas phase 17, 18), this result is not surprising. 

Another means for disposal of a sulfur product could involve reaction of hydrogen sulfide with either the ammonium or sodium sulfite solution to produce elemental sulfur. Additional processing is required, but the weight of disposable product could be reduced by a factor of about four. Moreover, under select conditions sale of sulfur could oflFset at least part of the processing costs. 

Apart from this, a number of side reactions take place. In the gas absorber polysulfides (Sx, with x<6) can be formed by reaction of hydrogen sulfide with sulfur ... 

Among the numerous methods of synthesis of alkylthiophenes, Maga (1975b) suggested the treatment of levulinic acid (E.41) with phosphorous sulfides or the direct alkylation of thiophene via its iodo derivatives. According to a mechanism proposed by Mottram (1991), this thiophene could result from the reaction of hydrogen sulfide with 2,4-pentadienal. 

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