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Synthesis of tertiary phosphine oxides mediated by SmCp2 or Sml2

✍ Scribed by F. Dallemer; J. Collin; H. B. Kagan

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 347 KB
Volume: 9
Category: Article
ISSN: 0268-2605
DOI: 10.1002/aoc.590090510

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✦ Synopsis

Tertiary phosphine oxides are prepared under mild conditions by sequential addition of diphenylphosphinoyl chloride to divalent samarium compounds (SmCp, and SmI,) followed by reaction with various electrophiles such as organic halides, tosylates, epoxides or a,gunsaturated ketones. Biscyclopentadienylsamarium (SmCp,) gives better yields than Sml,. Similar reactions, using phenylphosphonoyl dichloride, SmI, and subsequent addition of two equivalents of activated halides, yield the corresponding tertiary phosphine oxides. Keywords: samarium di

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