Degradation of sulfosulfuron, a sulfonylurea herbicide, as influenced by abiotic factors.
J Agric Food Chem
; 50(16): 4572-5, 2002 Jul 31.
Article
en En
| MEDLINE
| ID: mdl-12137477
ABSTRACT
A laboratory experiment was conducted to study the stability of sulfosulfuron [1-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2yl) urea] in a controlled environment of pH, temperature, solvent, and surface. In another experiment the photostability of sulfosulfuron was studied after irradiation under sunlight. Under alkaline condition, it yielded 1-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-yl-3-(4,6-dimethoxypyrimidin-2-yl) amine, and under acidic condition it degraded to 1-(2-ethylsulfonylimidazo[1,2-a] pyridin)-3-sulfonamide and 4,6-dimethoxy-2-aminopyrimidine. Photodegradation included breaking of a sulfonylurea bridge, as in the case of acidic hydrolysis and contraction of the sulfonylurea bridge was the major pathway of alkaline hydrolysis.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pirimidinas
/
Sulfonamidas
/
Herbicidas
Idioma:
En
Revista:
J Agric Food Chem
Año:
2002
Tipo del documento:
Article
País de afiliación:
India