Gemischte Xanthogensäureanhydride

Abstract

Es wird die Darstellung von Alkylxanthogen‐phosphorigsäureanhydriden und Dixanthogensäure‐dialkylestern durch Umsetzung von Kalium‐Alkylxanthogenaten mit Chloriden des Phosphors und des Schwefels beschrieben. Die Verbindungen zeigen Sammlerwirkung bei der Flotation sulfidischer Erze.

Phosphorus tribromide promoted allylic rearrangement of a tertiary vinyl carbinol. Stereochemistry of the reaction product and application to the synthesis of JH-25, a potent juvenile hormone mimic

“…Paper chromatography (solvent A) Rf 0.72. Paper electrophoresis (0.05 M phosphate, pH 8) Rd-pT 0.54. Anal.…”

“…Soc., 82, 5749 (1960); K. Ogura, T. Nishino, T. Koyama, and S. Seto, ibid., 92, 6036 (1970). (8) Reactions were carried out under a nitrogen atmosphere. Unless indicated otherwise, the isolation of reaction products was accomplished by pouring the mixture into water or saturated brine and extracting thoroughly with the specified solvent.…”

Selective phosphorylation by means of bis(O-thiocarbonyl) disulfides and triphenylphosphine

“…Paper chromatography (solvent A) Rf 0.72. Paper electrophoresis (0.05 M phosphate, pH 8) Rd-pT 0.54. Anal.…”

Structural, spectroscopic and theoretical studies on dixanthogens: (ROC(S)S)2, with R = n-propyl and isopropyl

“…Sodium tetrathionate, cyanogen bromide, nitrous acid, and iodine are some of the oxidizing agents currently used. [2][3][4][5] Several studies on the biological activities of this family of compounds have suggested its potential application as antitumoral or antiviral agents, among others. For example, the ability of bisethylxanthogen as an inhibitor of carcinogenesis was proposed by different authors [6][7][8] and its use in the treatment of dermatological infections was reported.…”