Chemical constitution and activity of bipyridylium herbicides—I
作者： L.A. Summers
DOI: 10.1016/S0040-4020(01)82544-8
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摘要: Abstract Diquaternary salts of 2,2′-dipyridyl sulphide including the new cyclic structures 6,7-dihydrodipyrido-[2.1- b :1′.2′- f ]-1,3,6-thiadiazepini dibromide and 6 H -dipyrido[2.1- e ]-1,3,5-thiadiazinium have been prepared. They are reduced by a relatively slow one electron transfer to radical cations which much less stable than those obtained from herbicidal bipyridylium diquaternary salts. The relative instablility may account for lack activity shown dipyridyl
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