C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/308.3
C07D 285/12 (2006.01) C07D 285/135 (2006.01)
Patent
CA 1151179
COMBATING UNWANTED VEGETATION WITH 1,3,4-THIADIAZOLE-2-SULFONAMIDES Abstract of the Disclosure The industrial herbicide 5-(1,3,3-trimethyl- ureido)-N,N-dimethyl-1,3,4-thiadiazole-2-sulfonamide and other compounds of similar structure may be made by a novel procedure in which the first step is the oxidative chlorination of a 2-alkylamino-5-mercapto-1,3,4-thiadia- zole to yield the corresponding sulfonyl chloride. The subject compound which possesses five methyl substituent groups is more effective as a herbicide than compounds which contain other alkyl substituents or a lesser number of methyl substituents.
134958
Doyle William C. Jr.
Hedrich Loren W.
Gulf Research & Development Company
Mccarthy Tetrault Llp
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