作者:Ashok K. Sharma、David L. Ryan、Nina L. Marr、Michael P. Wadsley、Steve F. Cheatham
DOI:10.1016/j.jphotochem.2017.06.028
日期:2017.9
Photo-degradation of [14C]-thifensulfuron methyl has been investigated in aqueous media using a light source which simulates sunlight. Degradation of thifensulfuron methyl proceeds predominantly via sulfonylurea bridge ipso-contraction, and via cleavage of the bridge structure, to yield products in which the thiophene and the triazine rings have disconnected. One significant degradation product, which
[ 14的光降解已经在水性介质中使用模拟阳光的光源研究了C]-噻吩磺隆甲基。噻吩磺隆的降解主要通过磺酰脲桥的ipso收缩和桥结构的裂解进行,以产生噻吩和三嗪环已断开的产物。一种占约10%的重要降解产物保留了两个带有截短桥部分的环。令人惊讶地,该产物具有从其原始位置重排的噻吩环取代基。其他实验室已经报告了噻吩磺隆的光降解,并确定了类似的降解产物。在以前的报道中,由于噻吩环的重排未被广泛认识,因此重排产物的结构被错误地识别。