Ein gemischt methyl/phenyl-substituiertes Carbodiphosphoran. Darstellung, Reaktionen und verwandte Verbindungen / A Mixed Methyl-/Phenyl-substituted Carbodiphosphorane. Synthesis, Reactions, and Related Compounds

Abstract

From the reaction of bis-diphenylphosphino-methane and methyl bromide a diquaternized onium salt is obtained, which is converted into the carbodiphosphorane MePh 2 P=C=PPh 2 Me by sodium amide in THF. This bis-ylide was characterized by its reactions and its NMR spectra. With methyl chloride, the above diphosphine yielded the phosphino-phosphonium salt, which forms a phosphino-ylide upon dehydrohalogenation.