Phosphate ester synthesis without phosphorylation catalyst

Details Phosphate ester synthesis without phosphorylation catalyst Phosphate ester synthesis without phosphorylation catalyst

1983-11-14

1985-12-17

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

C07F 909

Patent

active

045591849

ABSTRACT:
Triarylphosphates are prepared by phosphorylation of alkylphenols without use of phosphorylation catalyst. An improved phosphorylation step includes preheating alkylphenol feedstock to 150.degree. C. and completing reaction at 215.degree. C. or above in the presence of a stoichiometric excess of alkylphenol. The absence of phosphorylation catalyst simplifies distillative purification of reaction product by eliminating the need to withdraw purified product as distillate.

REFERENCES:
patent: 1425392 (1922-08-01), Laska et al.
patent: 1958210 (1934-05-01), Scott
patent: 2078421 (1937-04-01), Shuman
patent: 2168587 (1939-08-01), Shuman
patent: 4139487 (1979-02-01), Garrett
patent: 4351780 (1982-09-01), Giolito et al.

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