Lithiated alkyl diphenylphosphine oxides add readily to both aldehydes and ketones. The adducts may be treated with NaH to form alkenes, oxidized to ketones, or rearranged to new phosphine oxides, on which this sequence can be repeated. The diphenylphosphinyl group is thus a mobile, removable activating group: J. Chem. Soc., Chem. Commun., 148 (1975). Review: Chem. Ind. (London), 455 (1975):/n
Gefahrenhinweise (EU): H315-H319-H335
Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.