Reduction of carbonyl impurities in .alpha., .beta.-unsaturated

Details Reduction of carbonyl impurities in .alpha., .beta.-unsaturated Reduction of carbonyl impurities in .alpha., .beta.-unsaturated

1997-04-28

1998-08-04

Killos, Paul J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6748

Patent

active

057896135

ABSTRACT:
The invention provides a process for reducing one or more carbonyl impurity present in a monomer of an .alpha.,.beta.-unsaturated carboxylic acid or its alkyl ester by treating the monomer containing the carbonyl impurities with a trialkyl phosphite or a triaryl phosphite.

REFERENCES:
patent: 4187382 (1980-02-01), Cowherd et al.
patent: 5488141 (1996-01-01), Bauer, Jr. et al.
"Kinetics of the One-Electron Transfer Reaction of Trimethyl Phosphite with Quinones", J. Org. Chem. vol. 38, No. 19, 1973.
"Oxyphosphoranes", Chem. Res., vol. 1, pp. 168-174, 1968.
"Charge Transfer Reactions of Trivalent Phosphorus Compounds with P-Quinones" Phosphorus and Sulphur, Gordon and Breach Science Publishers, Ltd., Great Britain, vol. 5, pp. 61-66, 1978.
"Organic Compounds with Pentavalent Phosphorus." Fausto Ramirez, N. B. Desai, J. Amer. Chem. Soc., vol. 85, pp. 3252-3258, 1963.

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