| 摘要 |
Phenyl phosphonous dihalide is oxidized according to the following reaction: <IMAGE> wherein X is Cl or Br. The reaction is conducted at a temperature from about 0 DEG C. to about 200 DEG C. Charcoal is added to the reaction mixture when impure phenyl phosphonous dihalide is used as a starting material. The product has high purity and is stable at high temperatures. It can be used as an intermediate to prepare flame retardants, insecticides, pesticides and plasticisers.
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