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US 4,304,916 AGranted
Process of manufacturing herbicidal active sulfoxides and sulfone derivatives
AssigneeStauffer Chemical Company
InventorFrancis H. Walker
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Abstract
A process for manufacturing sulfoxide compounds is described herein. The process involves the reaction of certain thiocarbamic acid esters with an oxidizing agent at reduced temperatures.
Claims2
A process of manufacturing a pesticidal active compound having the following formula:
- ##STR7## wherein R is selected from pyridylmethyl, comprising the steps of:
- (a) combining an oxidizing agent and a thiocarbamate compound in an inert solvent system, said thiocarbamate having the following formula:
- ##STR8## wherein R has been defined above;
- (b) maintaining the temperature between -25.degree. C. and 15.degree. C.;
- and,
- (c) said oxidizing agent being present in an amount of at least one molar equivalent.
3 more elements
Dependencies are inferred from the claim text.