𝔖 Bobbio Scriptorium
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Sulfonylurea herbicides

✍ Scribed by Russell, Mark H.; Saladini, John L.; Lichtner, Frank

Book ID
120195001
Publisher
Royal Society of Chemistry
Year
2002
Tongue
English
Weight
530 KB
Volume
13
Category
Article
ISSN
1743-1026

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## Abstract Sulfonylurea herbicides have been studied using negative‐ion desorption chemical ionization (DCI) mass spectrometry (MS) and DCI‐MS/MS techniques. Both [M  H]^−^ and M^−·^ ions were observed in the DCI mass spectra. The collisionally activated dissociation (CAD) spectra were characteri

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New pyrimidine and triazine intermediates for herbicidal sulfonylureas are prepared as follows: 2,4-dichloro-6-methylpyrimidine is converted via a halogenation, halogen exchange and substitution sequence to 2-amino-4-tri¯uoromethyl-6-tri¯uoromethoxypyrimidine. New ¯uoromethyl-triazines are available