Phosphonite
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In organic chemistry, phosphonites are organophosphorus compounds with the formula P(OR)2R. They are found in some pesticides and are used as ligands.[1]
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]
References
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- ↑ D. E. C. Corbridge "Phosphorus: An Outline of its Chemistry, Biochemistry, and Technology" 5th Edition Elsevier: Amsterdam 1995. Template:ISBN.
- ↑ IUPAC, Compendium of Chemical Terminology, 5th ed. (the "Gold Book") (2025). Online version: (2006–) "phosphonous acids". Script error: No such module "CS1 identifiers".Script error: No such module "TemplatePar".
- ↑ 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. Script error: No such module "CS1 identifiers".
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