Phosphonite

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General ester of phosphonous acid
Not to be confused with phosphinite (formula P(OR)R2).

In

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),

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

  1. ISBN 0-444-89307-5
    .
  2. doi:10.1351/goldbook.P04565
  3. doi:10.1002/9781118299715.ch5
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