69500-28-3Relevant academic research and scientific papers
Preparation method of cresyl diphenyl phosphate
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Paragraph 0037; 0049; 0051-0053; 0054; 0065-0068, (2019/11/21)
The invention relates to a preparation method of cresyl diphenyl phosphate. The method includes the steps of: 1) esterification reaction: mixing phosphorus oxychloride with a catalyst, then adding phenol dropwise, and at the end of the reaction, conducting reduced pressure distillation to obtain diphenoxy phosphoryl chloride; 2) reduced pressure reaction: reacting the intermediate diphenoxy phosphoryl chloride obtain in step 1) with m, p-cresol under a reduced pressure, and removing the reacted hydrogen chloride gas to obtain a cresyl diphenyl phosphate crude product; and 3) refining: carryingout alkali washing, washing and reduced pressure distillation on the cresyl diphenyl phosphate crude product obtained in step 2) to obtain cresyl diphenyl phosphate. Phosphorus oxychloride and phenolare employed for reaction to prepare the diphenoxy phosphoryl chloride intermediate, the generated intermediate reacts with m, p-cresol to prepare the product, the synthetic route reduces the impurities phenyl xylylphosphate, tricresyl phosphate and triphenyl phosphate, thus improving the purity.
Synthesis of Unsymmetrical Triaryl Phosphates under Phase-Transfer Catalysis
Genkina,Shipov,Mastryukova,Kabachnik
, p. 1742 - 1744 (2007/10/03)
A Convenient general method for preparing of unsymmetrical triaryl phosphates is elaborated. The influence of the reaction conditions on the yield and purity of the target products is revealed.
