Bispyridinium compounds
Abstract
Abstract NOVEL 4,4''-BISYRIDINIUM COMPOUNDS WHICH CONTAIN DIVALENT CONJUGATED STRUCTURES BETWEEN THE PYRIDINE RINGS HAVE UNUSUAL CHARACTERISTICS WHICH MAKE THEM USEFUL AS SELECTIVE HERBICIDES AND AS INDICATOR REAGENTS IN COLORIMETRIC ANALYSIS. PARTICULARLY INTERESTING ARE THE 4,4''-(2,5(1,3,4-THIADIAZOL)-YLENE) BISPYRIDINIUM HALIDES WHICH ARE REPRESENTED BY THE FOLLOWING STRUCTURAL FORMULA: 2,5-BIS(R-(1,4-PYRIDINYLENE)-)1,3,4-THIADIAZOLE (X(-))2 WHEN R IS A HYDROCARBON SUBSTITUTENT GROUP WITH A MOLECULAR WEIGHT LESS THAN ABOUT 150, THESE COMPOSITIONS EXHIBIT BOTH GOOD ACTIVITY AND SELECTIVITY, AND ARE USEFUL IN POST-EMERGENT CONTROL OF BROAD-LEAF WEEDS IN CROPS SUCH AS CORN, WHEAT, OATS, AND SORGHUM GRAINS.
Inventors
- 👤 William Carter Doyle
Bibliographic Details
Claims Analysis
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