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Sulfur reactions with

The P2N4S2 ring in 111 is readily susceptible to nucleophilic attack at sulfur. Reactions with organolithium reagents give monolithium derivatives... [Pg.264]

Sulfonium, cyclopropyldiphenyl tetrafluoroborate, 54, 28 Sulfonium salts, acetylenic, furans from, 53, 3 Sulfonium ylides, 54, 32 Sulfur, reaction with organo-lithium compounds, 50, 105 Sulfuryl chloride, with 1,1-cyclobutanedicarboxylic acid to give 3-chloro-l,1-cyclobutanedicarboxylic acid, 51, 73... [Pg.65]

The first term of Eq. 80 represents the mass loss of char particles due to carbon combustion and the second term represents the mass loss of char particles due to sulfur reaction with oxygen. Using the stoichiometry of reactions 1 and 2, we can obtain the moles of oxygen used up in these respective reactions for any arbitrary height n as. [Pg.137]

SulHdes, aromatic, 50, 76 3-Sulfolene, as a source of 1,3-buta-diene in situ, 50,43 Sulfones, bromination, 50,31 Sulfur, reaction with organo-Uthium compounds, 50,105... [Pg.58]

Figure 6. NMR spectra for thiophenol/sulfur reaction with increasing (1-4) reaction time. Region A—SH signal decreases with time. Region B—polysulfanes appear and subsequently decrease. Region C— crease in signal and increase in product (CgHg)gSj. ... Figure 6. NMR spectra for thiophenol/sulfur reaction with increasing (1-4) reaction time. Region A—SH signal decreases with time. Region B—polysulfanes appear and subsequently decrease. Region C— crease in signal and increase in product (CgHg)gSj. ...
Hexamethylphosphoramidef sulfur Reactions with sulfur in hexamethylphosphoramide... [Pg.157]

Thioglycosides can be activated for gfycosylation reactions with sulfur electrophiles, e.g., with dimethyl(methylthio)sulfonium triflate or with methanesulfenyi bromide and silver(l +) to form reactive sulfonium intermediates (F. Dasgupta, 1988). [Pg.271]

In the synthesis of commercial sulfur-heterocycles two interesting reactions are used (i) diphenylamines may be connected by a sulfur bridge in the orfho-positions (ii) the amino grouping of sulfonamides undergoes condensation reactions with neighboring imino- and amide groups. [Pg.309]

Displacement Reactions with Carbon, O.xygen. and Sulfur Nucleophiles... [Pg.244]

Nucleophilic reactivity of exocyclic sulfur appears in acidic medium. 2-AryI thiazolyl sulfones are obtained from the corresponding sulfides by oxidation with HjO- in HOAc at 100°C (272). The same oxidation takes place with alkyl sulfides (203. 214, 273-275) and dithiazolylsulfides (129). However, the same reaction with 2-benzylthio derivatives gives benzylal-cohol and the related A-4-thiazoline-2-thione (169). [Pg.405]

In 1888, Foerster (91), reproducing the same reaction with dianisyl-thiourea, demonstrated that the compound he obtained (59) could lose a sulfur atom by reduction with tin and hydrochloric acid to form a product analogous to N-phenylpiperidine (60). [Pg.21]

Alkyl hydrogen sulfates can be converted to alcohols by heating them with water This IS called hydrolysis, because a bond is cleaved by reaction with water It is the oxygen-sulfur bond that is broken when an alkyl hydrogen sulfate undergoes hydrolysis... [Pg.246]

Step 2 On reaction with hydrogen chloride m an anhydrous solvent the thiocarbonyl sulfur of the PTC derivative attacks the carbonyl carbon of the N terminal ammo acid The N terminal ammo acid is cleaved as a thiazolone derivative from the remainder of the peptide... [Pg.1134]

The amide group is readily hydrolyzed to acrylic acid, and this reaction is kinetically faster in base than in acid solutions (5,32,33). However, hydrolysis of N-alkyl derivatives proceeds at slower rates. The presence of an electron-with-drawing group on nitrogen not only facilitates hydrolysis but also affects the polymerization behavior of these derivatives (34,35). With concentrated sulfuric acid, acrylamide forms acrylamide sulfate salt, the intermediate of the former sulfuric acid process for producing acrylamide commercially. Further reaction of the salt with alcohols produces acrylate esters (5). In strongly alkaline anhydrous solutions a potassium salt can be formed by reaction with potassium / /-butoxide in tert-huty alcohol at room temperature (36). [Pg.134]

Polythiodipropionic acids and their esters are prepared from acryUc acid or an acrylate with sulfur, hydrogen sulfide, and ammonium polysulfide (32). These polythio compounds are converted to the dithio analogs by reaction with an inorganic sulfite or cyanide. [Pg.151]

The sulfuric acid hydrolysis may be performed as a batch or continuous operation. Acrylonitrile is converted to acrylamide sulfate by treatment with a small excess of 85% sulfuric acid at 80—100°C. A hold-time of about 1 h provides complete conversion of the acrylonitrile. The reaction mixture may be hydrolyzed and the aqueous acryhc acid recovered by extraction and purified as described under the propylene oxidation process prior to esterification. Alternatively, after reaction with excess alcohol, a mixture of acryhc ester and alcohol is distilled and excess alcohol is recovered by aqueous extractive distillation. The ester in both cases is purified by distillation. [Pg.155]

In the commonly used Welland process, calcium cyanamide, made from calcium carbonate, is converted to cyanamide by reaction with carbon dioxide and water. Dicyandiamide is fused with ammonium nitrate to form guanidine nitrate. Dehydration with 96% sulfuric acid gives nitroguanidine which is precipitated by dilution. In the aqueous fusion process, calcium cyanamide is fused with ammonium nitrate ia the presence of some water. The calcium nitrate produced is removed by precipitation with ammonium carbonate or carbon dioxide. The filtrate contains the guanidine nitrate that is recovered by vacuum evaporation and converted to nitroguanidine. Both operations can be mn on a continuous basis (see Cyanamides). In the Marquerol and Loriette process, nitroguanidine is obtained directly ia about 90% yield from dicyandiamide by reaction with sulfuric acid to form guanidine sulfate followed by direct nitration with nitric acid (169—172). [Pg.16]


See other pages where Sulfur reactions with is mentioned: [Pg.53]    [Pg.833]    [Pg.53]    [Pg.833]    [Pg.55]    [Pg.334]    [Pg.393]    [Pg.667]    [Pg.8]    [Pg.372]    [Pg.378]    [Pg.612]    [Pg.815]    [Pg.818]    [Pg.53]    [Pg.88]    [Pg.389]   
See also in sourсe #XX -- [ Pg.3 , Pg.695 ]

See also in sourсe #XX -- [ Pg.3 , Pg.695 ]




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1.3- Dimethoxybenzene, reaction with sulfur

1.4- Dichlorobenzene reaction with sulfur

Acetylene derivs reaction with sulfur

Acetylene reaction with sulfur

Addition Reactions with Electrophilic Sulfur and Selenium Reagents

Aldehydes reaction with sulfur ylids

Alkenes and fluomalkenes reaction with chlorotetrafluoro sulfur

Alkyl halides reactions with sulfur

Aluminum hydroxide reaction with sulfuric acid

Aluminum reaction with sulfuric acid

Amides reaction with pyridine-sulfur trioxide

Amines reaction with pyridine-sulfur trioxide

Amines, reaction with elemental sulfur

Ammonia reaction with sulfuric acid

Antimony—sulfur bonds reactions with

Arsenic—sulfur bonds reactions with

Arylamines, reaction with sulfur

Atmosphere sulfur dioxide reaction with oxygen

Benzene, reaction with sulfur monochloride

Boron—sulfur bonds reactions with

Calcium carbonate reaction with sulfur dioxide

Calcium phosphate sulfuric acid reaction with

Carbon disulfide, exchange reactions with sulfur

Carbon—sulfur bonds reactions with

Copper oxide reaction with sulfuric acid

Copper reaction with sulfuric acid

Cyanogen chloride, in preparation reaction with sulfur trioxide

Cyanogen, reaction with sulfur monochloride

Diazoalkanes reaction with sulfur

Dienes reaction with sulfur dioxide

Diketones, reaction with sulfur

Diketones, reaction with sulfur preparation

Disilanes reactions with sulfur

Dithiocarboxylates reactions with sulfur

Electrophilic attack insertion reactions with sulfur

Epoxides, reaction with sulfuric acid

Ethylene reaction with sulfur

Ethylenediamine, reaction with sulfur

Friedel Crafts reaction benzene with sulfur

Germanium—sulfur bonds reactions with

Glutathione reaction with sulfur

Halides, aryl reaction with sulfur nucleophiles

Halogens reaction with sulfur

Heptanoic acid, reaction with sulfur

Heptanoic acid, reaction with sulfur tetrafluoride

Hydrogen peroxide reactions with sulfur compounds

Hydrogenated product reactions with sulfur, procedure

Hydroxide reaction with elemental sulfur

Insertion reactions with sulfur compounds

Iridium complexes reaction with sulfur dioxide

Ketones reaction with sulfur tetrafluoride

Ketones, reaction with sulfur ylids

Magnesium reaction with sulfuric acid

Methane reaction with elemental sulfur

Methane reaction with sulfur

Nitrate radical sulfur , reaction with

Nitrous acid sulfur dioxide reaction with

Nucleophilic addition reactions with sulfur nucleophiles

Of configuration in reactions with sulfur tetrafluonde

Olefins reaction with sulfur dioxide

Phenols reaction with pyridine-sulfur trioxide

Polysulfones by the Reaction of Acetylene with Sulfur Dioxide

Polysulfones by the Reaction of Allylic Compounds with Sulfur Dioxide

Raney nickel reaction with sulfur compound

Reaction of Metals with Sulfuric Acid

Reaction of alkene oxides (oxiranes) with sulfur compounds

Reaction of carbonyl compounds with sulfur tetrafluoride

Reaction of carboxylic acid derivatives with sulfur compounds

Reaction with Oxygen and Sulfur Nucleophiles

Reaction with reduced sulfur species

Reaction with sulfur compounds

Reaction with sulfur dichloride

Reaction with sulfur dioxide

Reaction with sulfur oxide

Reaction with sulfur tetrafluonde

Reaction with sulfur ylids

Reaction with sulfur, selenium

Reaction with sulfuric acid

Reactions of O2 with sulfur compounds

Reactions of Sulfur-Based Nucleophiles with Halogenated Aliphatics

Reactions sulfur oxides with water

Reactions sulfuric acid with water

Reactions with Elemental Sulfur, Selenium and Tellurium

Reactions with Sulfur and Selenium Compounds

Reactions with Sulfur, Boron, Carbon, Phosphorus, Arsenic, Antimony, and Bismuth

Reactions with Sulfur, Carbon, and Silicon

Reactions with nitrogen—sulfur bonds

Reactions with phosphorus—sulfur bonds

Reactions with sulfur dioxide and sulfinimines

Reactions with sulfur electrophiles

Reactions with sulfur halides

Reactions with sulfur heterocycles

Reactions with sulfur nucleophiles

Reactions with sulfur—oxygen bonds

Rhodium complexes reaction with sulfur dioxide

Silicon—sulfur bonds reactions with

Sodium hydroxide reaction with sulfuric acid

Stoichiometric reaction of sulfur dioxide with transition metal complexes

Styrene reaction with sulfuric acid

Sucrose reaction with sulfuric

Sucrose reaction with sulfuric acid

Sugar reaction with concentrated sulfuric

Sugar sulfuric acid reaction with

Sulfur atoms exchange reactions with

Sulfur chemistry, reaction with

Sulfur chloride pentafluoride reaction with

Sulfur chlorides reaction with, phosgene

Sulfur compounds reactions with amides

Sulfur dichloride reactions with dienes

Sulfur dichloride, reaction with alkynes

Sulfur dichloride, reaction with ammonium

Sulfur dichloride, reaction with ammonium chloride

Sulfur dichloride, reaction with aromatic

Sulfur dichloride, reaction with aromatic compounds

Sulfur dioxide equilibrium reaction with oxygen

Sulfur dioxide reaction with hexatriene

Sulfur dioxide reaction with oxygen

Sulfur dioxide reaction with trienes

Sulfur dioxide reaction with water

Sulfur dioxide reactions with metal-ligand bonds

Sulfur dioxide reactions with metals

Sulfur dioxide, oxidative reactions with

Sulfur dioxide, reaction with carbohydrates

Sulfur dioxide, reaction with palladium

Sulfur dioxide, reaction with palladium complexes

Sulfur dioxide, reaction with styrene

Sulfur dioxide, reaction with styrene phosphorus pentachloride to give

Sulfur dioxide, reaction with styrene styrylphosphonic dichloride

Sulfur elemental, reaction with

Sulfur fluoride reaction with

Sulfur fluorides reaction with, carbonyl difluoride

Sulfur hydrides reactions with

Sulfur monochloride, preparation reaction with oxides

Sulfur monochloride, reaction with

Sulfur monochloride, reaction with dimethylformamide

Sulfur nucleophiles, reaction with arene oxides

Sulfur oxidative reactions with

Sulfur oxide fluorides reaction with, phosgene

Sulfur oxyhalides reactions with

Sulfur reaction with Grignard reagents

Sulfur reaction with anionic sites

Sulfur reaction with hydroxide

Sulfur reaction with iron

Sulfur reaction with oxygen

Sulfur reaction with zinc

Sulfur reaction with, phosgene

Sulfur reactions with alkenes

Sulfur reactions with hydrogen

Sulfur tetrafluoride reaction with amides

Sulfur tetranitride, reaction with

Sulfur trioxide reaction with

Sulfur trioxide reaction with alcohols

Sulfur trioxide reaction with fluorinated compounds

Sulfur trioxide, reaction with cyanogen

Sulfur trioxide, reaction with cyanogen chloride

Sulfur trioxide, reaction with water

Sulfur trioxide, reaction with water Sulfuric acid

Sulfur trioxide, reactions with conjugates

Sulfur ylides reaction with trialkylboranes

Sulfur ylides reactions with carbonyl compounds

Sulfur, reaction with 1-chlorobenzotriazole

Sulfur, reaction with dimedone

Sulfur, reaction with organo-lithium

Sulfur, reaction with organo-lithium compounds

Sulfur, reaction with organolithium compounds

Sulfur-nitrogen compounds reaction with, phosgene

Sulfur-nitrogen compounds reactions with

Sulfur-oxygen compounds reaction with, phosgene

Sulfuric acid reaction with aromatic compounds

Sulfuric acid reaction with aryl sulfonic acids

Sulfuric acid reaction with benzene

Sulfuric acid reaction with haloamines

Sulfuric acid reaction with hydroxyl radicals

Sulfuric acid, reaction with alcohols

Sulfuric acid, reaction with alkenes

Sulfuric acid, reaction with aromatic aldehydes

Sulfuric acid, reaction with aromatic rings

Sulfuric acid, reaction with diethyl

Sulfuric acid, reaction with diethyl sulfate

Sulfuric acid, reaction with nitriles

Sulfuric acid, reaction with nitro compounds

Sulfuric acid, reaction with oximes

Sulfuric acid, reaction with sulfonic acids

Sulfur—hydrogen bonds reactions with

Superoxide reaction with sulfur radicals

Tetrahydrothiophene, reaction with sulfur

Trifluoromethyl reactions with sulfur vapor

Triphenylphosphine, reaction with elemental sulfur

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