Saha Supradip, Kulshrestha Gita
Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110012, India.
J Agric Food Chem. 2002 Jul 31;50(16):4572-5. doi: 10.1021/jf0116653.
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.
进行了一项实验室实验，以研究磺酰磺隆[1-(2-乙基磺酰基咪唑并[1,2-a]吡啶-3-基磺酰基)-3-(4,6-二甲氧基嘧啶-2-基)脲]在pH值、温度、溶剂和表面的可控环境中的稳定性。在另一项实验中，研究了磺酰磺隆在阳光照射后的光稳定性。在碱性条件下，它生成1-(2-乙基磺酰基咪唑并[1,2-a]吡啶-3-基-3-(4,6-二甲氧基嘧啶-2-基)胺，在酸性条件下它降解为1-(2-乙基磺酰基咪唑并[1,2-a]吡啶)-3-磺酰胺和4,6-二甲氧基-2-氨基嘧啶。光降解包括磺酰脲桥的断裂，如酸性水解的情况，磺酰脲桥的收缩是碱性水解的主要途径。
