Chemical Constitution and Activity of Bipyridylium Herbicides, X1 3-Substituted-6,7-dihydrodipyrido[1,2-a: 2′,1′-c]-pyrazinediium Dibromides and Related Compounds

Nasim H. Pirzada 1 , Peter M. Pojer 1  and Lindsay A. Summers 1
  • 1 Department of Chemistry, The University of Newcastle, 2308, New South Wales, Australia

The synthesis of 3-substituted-6,7-dihydrodipyrido-[1,2-α:2′,1′-c]-pyrazinediium dibromides is described. The 3-alkoxy and 3-carbomethoxy derivatives can be regarded as reversible one electron transfer systems. The most active compound is the 3-methoxy derivative which is a very effective post-emergent herbicide at 1-2 kg/hectare

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Zeitschrift für Naturforschung B is an international scientific journal which publishes original papers, microreviews, and letters from all areas of inorganic chemistry, solid state chemistry, coordination chemistry, molecular chemistry, and organic chemistry.