Phosphonite

Phosphonites are organophosphorus compounds with the formula P(OR)2R. They are found in some pesticides and are used as ligands.[1]

General ester of phosphonous acid

Preparation

Although they are derivatives of phosphonous acid (RP(OH)2),[2] they are not prepared from such precursors. Phosphonites are prepared by alcoholysis of organophosphinous chlorides. For example, treatment of dichlorophenylphosphine with methanol and base gives dimethyl phenylphosphonite:

Cl2PPh + 2 CH3OH → (CH3O)2PPh + 2 HCl

Reactions

Oxidation of phosphonites gives phosphonates:

2 P(OR)2R + O2 → 2 OP(OR)2R

Phosphonites can function as ligands in homogeneous catalysis.[3]

gollark: !returnof <investment>?
gollark: !return <investment> maybe?
gollark: I can do some webdev stuff if you need much help with that.
gollark: National security reasons.
gollark: I'm hoping that asteroid mining technology becomes practical reasonably soon, both because of the future of the human of the race and all that and to annoy "people" who "invest" "in" "gold".

References

  1. D. E. C. Corbridge "Phosphorus: An Outline of its Chemistry, Biochemistry, and Technology" 5th Edition Elsevier: Amsterdam 1995. ISBN 0-444-89307-5.
  2. IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006) "phosphonous acids". doi:10.1351/goldbook.P04565
  3. T. V. (Babu) Rajanbabu “Phosphinite and Phosphonite Ligands” in Phosphorus(III) Ligands in Homogeneous Catalysis: Design and Synthesis Paul C. J. Kamer and Piet W. N. M. van Leeuwen, Eds., John Wiley & Sons 2012. doi:10.1002/9781118299715.ch5
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.