Transition-Metal-Free and Oxidant-Free Cross-Coupling of Arylhydrazines with Disulfides: Base-Promoted Synthesis of Unsymmetrical Aryl Sulfides
A novel synthesis of unsymmetrical aryl sulfides, which requires no transition metal catalyst and no oxidant, was developed. This base-promoted cross-coupling reaction proceeded using arylhydrazines and 1 equiv amount of disulfides under inert gas conditions to afford the unsymmetrical aryl sulfides in good yields.
Nucleophilic substitutions at the pyridine ring. Conformational preference of the products and kinetics of the reactions of 2-chloro-3-nitro- and 2-chloro-5-nitro-pyridines with arenethiolates
The reactions of 2-chloro-3-nitropyridine 1 and 2-chloro-5-nitropyridine 2 with arenethiolates 3a-i result in arylthio-dechlorination to give 2-arylthio-3-nitropyridines 4a-i and 2-arylthio-5-nitropyridines 5a-i. A 1H NMR study and AM1 calculat
Hamed, Ezzat A.,El-Bardan, Ali A.,Saad, Esmat F.,Gohar, Gamal A.,Hassan, Ghada M.
p. 2415 - 2421
(2007/10/03)
1-Benzoyl-3-(aryloxy- or arylthiopyridinyl) urea compounds
The present invention is directed to 1-benzoyl-3-(aryloxy- or arylthio-pyridinyl)urea compounds useful as insecticides.
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(2008/06/13)
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