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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4147866 B1

PDFFull Text
Date of Patent:
Apr. 03, 1979

Filed:

Feb. 22, 1978

Process for preparing phosphorothioates and phenylphosphonothioates

Applicant:
Inventors:

Harold H Freedman, Newton Center, MA (US);

Stanley D McGregor, Midland, MI (US);

Masao Yoshimine, Midland, MI (US);

Lorraine M Kroposki, Antioch, CA (US);

Assignee:

The Dow Chemical Company, Midland, MI (US);

Attorneys:

Jones; S. Preston

White; L. Wayne

Brookens; R. G.

Primary Examiner:

Jose Tovar

Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
544243 ; 544337 ; 260973 ;
Abstract

Quaternary ammonium salts and sterically unhindered, nucleophilic, tertiary amines are novel cocatalysts which are used in the process of reacting an alkali metal phenate, pyridinate or pyrimidinate with an O,O-dialkylphosphorochloridothioate or O-alkyl phenylphosphonochloridothioate to produce the corresponding phosphorothioates and phenylphosphonothioates. The process is conducted under alkaline conditions in a liquid reaction medium.

Find Patent Forward Citations

Freedman, Harold. (1979). Process for preparing phosphorothioates and phenylphosphonothioates (U.S. Patent No. 4147866). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4147866

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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