Method for preparing O,O-dialkyl S-[2-(alkylthio)alkyl]...

Details Method for preparing O,O-dialkyl S-[2-(alkylthio)alkyl]... Method for preparing O,O-dialkyl S-[2-(alkylthio)alkyl]...

2006-05-23

2006-05-23

Saeed, Kamal A. (Department: 1626)

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

Organic compounds

Phosphorus esters

Reexamination Certificate

active

07049456

ABSTRACT:
The invention relates to a method of preparing O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioates by treating O,O-dialkyl dithiophosphoric acids with a base in the substantial absence of organic solvent to obtain O,O-dialkyl dithiophosphoric acid salts that are in turn treated with thioalcohol derivatives to form the O,O-dialkyl S-[2-(alkylthio)alkyl] phosphorodithioates.

REFERENCES:
patent: 2759010 (1956-08-01), Lorenz et al.
patent: 4283335 (1981-08-01), Minn
patent: 4283338 (1981-08-01), Minn
patent: 4416834 (1983-11-01), Feyen et al.
Robert et al., “Reactivity of O,O'-Dialkyldithiophosphoric Acid Towards Different Allylic Compounds,” Phosphorus, Sulfur and Silicon and the Related Elements, vol. 97, Iss. 1-4, pp. 83-87 (1994).
Jaeger et al., “Reactions of a Vesicular Functionalized Surfactant with Alkyl 2-Chloroethyl Sulfides,” Langmuir, vol. 16, pp. 9677-9679 (2000).

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