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

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Abstract
From the reaction of bis-diphenylphosphino-methane and methyl bromide a diquaternized onium salt is obtained, which is converted into the carbodiphosphorane MePh2P=C=PPh2Me 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.