1. 7-(4,6-Dimethoxypyrimidinyl)oxy- and -thiophthalides as novel herbicides: Part 1. CGA 279 233: a new grass-killer for rice.
- Author
-
Lüthy C, Zondler H, Rapold T, Seifert G, Urwyler B, Heinis T, Steinrücken HC, and Allen J
- Subjects
- Benzofurans pharmacology, Biological Assay, Chemistry, Agricultural methods, Half-Life, Herbicides pharmacology, Isomerism, Molecular Structure, Oryza metabolism, Phthalic Acids chemical synthesis, Poaceae drug effects, Pyrimidines pharmacology, Soil analysis, Structure-Activity Relationship, Acetolactate Synthase antagonists & inhibitors, Benzofurans chemical synthesis, Enzyme Inhibitors pharmacology, Herbicides chemical synthesis, Pyrimidines chemical synthesis
- Abstract
A series of novel types of 7-(4,6-dimethoxypyrimidin-2-yl)oxy- and -thio-3-methyl-1 (3H)-isobenzofuranones were discovered at Dr R Maag AG. From the thio-isobenzofuranyl series, CGA 279 233--BSI-proposed common name pyriftalid--was chosen for further development as a grass herbicide for use in rice. General synthetic approaches to these new phthalic acid-derived compounds are given, with emphasis on the synthesis of pyriftalid and its physico-chemical behaviour.
- Published
- 2001
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