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Abstract
A new method for producing fluoro(organyl) phosphanes is presented. They are prepared by Cl/F-exchange from the corresponding chloro compounds using Et3N.nHF as a fluorinating agent. Phosphanyl fluorophospharanes, R2P-PR2F2, are found to be intermediates of the disproportionation of Fluoro (diorganyl) phosphanes. R2PF react with aldehydes to form phosphinito phosphoranes, R2PF2-CHR'-OPR2. Oxaphospholenes are formed in their reaction with α, β- unsaturated aldehydes. Furthermore, the reactions with 1.2-diketones, carboxylic acid derivatives, and covalent azides are described.