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US 3,946,062 AGranted
Preparation of 2-chlorocycloalkylthio urea compounds
AssigneeChevron Research Company
InventorJames D. Cleveland
Life of this patent
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Abstract
Herbicidal 2-chlorocycloalkylthio urea compounds are produced by the 1,2-addition of an N-chlorothio urea to cycloalkenes. The N-chlorothio urea reactant is produced by the reaction of a urea and sulfur dichloride.
Claims11
In the process of preparing urea compounds which comprises:
- 1. reacting substantially equimolar amounts of a urea reactant of the formula ##EQU3## wherein R, R.sup.1 and R.sup.2 are hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 10 carbon atoms, carbocylic aryl of 6 to 12 carbon atoms substituted with up to a 4 fluoro, chloro, bromo, trifluoromethyl, trichloromethyl, nitro or alkoxy of 1 to 4 carbon atoms, and sulfur dichloride in the presence of an acid acceptor, and
- 2.
Dependencies are inferred from the claim text.