Potassium xanthogenate

Xanthogenates—by reaction with aqueous potassium xanthogenate, and thence to mercaptans by treatment with potassium hydroxide, for example ... 

To a solution of 60 g of potassium xanthogenate in 240 cc of water there is added dropwise, while being cooled with ice, a solution of 42 g of 3,4-bis-bromomethyl-4-hydroxy-5-methyl-pyridinium-bromide In 1 liter of water so that the temperature remains between 2°C and 5°C. After stirring for 1 hour at the same temperature, the water is decanted off and the residue is triturated with acetone. Yield 25 g of 4-hydroxymethyl-5-hydroxy-6-methyl-pyridyl-(3)-methy I xanthogenate melting point 170°C to 171°C (alcohol, decomposition). 

Hubner Powder. Smokeless powder prepd by gelatinizing NC with a solution of potassium xanthogenate in alcoholic ether and adding 2-5% of nitronaphthol and nitromolasses or nitrosugar Ref Daniel (1902), 378... 

Sulfur can be introduced into a diazonium salt by the SN1 reaction shown in Figure 5.51. In order to prevent the reagent from effecting a double (rather than a mono-) arylation at the sulfur atom, potassium xanthogenate instead of sodium sulfide is used as the sulfur nucleophile. The resulting S-aryl xanthogenate C is hydrolyzed. In this way diarylsulfide-free aryl thiol B is obtained. 

Ethyl polysilicate. See Polydiethoxysiloxane Ethyl potassium carbonate Ethyl potassium xanthate Ethyl potassium xanthogenate. See Potassium ethyl xanthate Ethyl propanoate. See Ethyl propionate 1 -Ethyl-1 -propanol. See 3-Pentanol Ethyl 1-propene-1,2,3-tricarboxylate. See Ethyl aconitate, mixed esters Ethyl propenoate Ethyl 2-propenoate. See Ethyl acrylate Ethyl propionate... 

Synonyms Butyl potassium xanthate Butyl xanthic acid, potassium salt Carbondithioic acid, O-butyl ester, potassium salt Dithiocarbonic acid-o-butyl ester potassium salt Potassium o-butyl carbonodithioate Potassium butyl xanthate Potassium-o-butyl xanthate Potassium butyl xanthogenate Potassium xanthogenate butyl ether Classification Potassium salt of dithiocarbonic acid ester... 

Ethyl potassium xanthogenate Ethyixanthic acid potassium salt KEX PEX Potassium ethyidithiocarbonate... 

Potassium 0-ethyl dithiocarbonate Potassium ethyl xanthogenate Potassium xanthate Potassium xanthogenate... 

Potassium xanthate Potassium xanthogenate. See Potassium ethyl xanthate Potassium xanthogenate butyi ether. See Potassium n-butyl xanthate Potassium xyiene sulfonate CAS 30346-73-7 EINECS/ELINCS 250-140-3 Synonyms PXS Xylene sulfonic acid,... 

The use of nanoparticle for the C—S cross-coupling has been reported under ligand-free conditions. Punniyamurthy and coworkers introduced air-stable CuO nanoparticles for the coupling of thiols with aryl iodides [102, 172]. Karvembu [173] and Kakulapati [174] subsequently employed CuO nanoparticles for the coupling of aryl halides with thiophenol and ethyl potassium xanthogenate, respectively. Kamal and coworkers used CuO nanoparticles/graphene oxide for the coupling of aryl chlorides with thiols (Scheme 20.56) [175]. 

Fluorine-containing ortfto-aminophenols or their precursors are commonly used for the preparation of fluorinated benzoxazoles. For example, F- and CF3-containing orf/io-aminophenols were cyclized by potassium xanthogenate to give 2-mercaptobenzoxazoles [51]. 

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