Process for preparing O-alkyl, O-alkylphosphorochloridothioates

Details Process for preparing O-alkyl, O-alkylphosphorochloridothioates Process for preparing O-alkyl, O-alkylphosphorochloridothioates

1997-09-11

1999-09-07

Geist, Gary

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

Organic compounds

Phosphorus esters

558 92, 558 99, 558100, C07F 916

Patent

active

059489308

ABSTRACT:
The invention relates to process for the preparation of an O-alkyl, O-alkyl phosphorochloridothioate by 1) reacting A) a thiophosphoryl halide with B) an alcohol, in the presence of C) a tertiary amine acid acceptor and D) a solvent, and 2) reacting the resultant product with a second alcohol, different from the alcohol used in step 1). In the preferred embodiment, the intermediate product is not isolated before reaction with the second alcohol.

REFERENCES:
patent: 3365532 (1968-01-01), Kauer
patent: 3790649 (1974-02-01), Schumacher et al.
patent: 4127652 (1978-11-01), Maurer et al.
patent: 4666894 (1987-05-01), Maurer et al.
Organic Phosphorous Compounds, vol. 7 (month unavailable) 1976, pp. 500-502.
Beilstein on stn on line-Beilstein registry No. 471486, a mixed alkyl ester, disclosed in Zh Obshch Kim 27 p. 1908, 1957.
Chemical abs vol. 63, 17875h, abs of "Cyclic organophophorus compounds." Tetrahedron 21(9), pp. 2379-2387, 1965.

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