作者:Johan Eriksson、Jesper Svanfelt、Leif Kronberg
DOI:10.1111/j.1751-1097.2009.00703.x
日期:——
(diclofenac) and its transformation products (TPs) (8-chloro-9H-carbazol-1-yl) acetic acid (Cz1), 2-(2-chloro-phenylamino)-benzaldehyde (Ald) and (1,4-dioxo-4,9-dihydro-1H-carbazol-8-yl) acetic acid (Cz4) in aqueous solutions have been studied. The previously unreported TP (Cz4) was isolated by LC and completely characterized by NMR and MS. UV-absorption spectra of diclofenac and three of its TPs were determined
2-(2-(2-(2,6-二氯苯基氨基)苯基)乙酸(双氯芬酸)及其转化产物(TPs)(8-氯-9H-咔唑-1-基)乙酸(Cz1)的光解转化,2研究了水溶液中的-(2-氯-苯基氨基)-苯甲醛(Ald)和(1,4-二氧代-4,9-二氢-1H-咔唑-8-基)乙酸(Cz4)。通过LC分离了以前未报告的TP(Cz4),并通过NMR和MS对其进行了完全表征。确定了双氯芬酸及其三个TP的紫外吸收光谱,并用于计算消失量子产率。双氯芬酸的主要转化途径是通过最初形成Cz1而发生的,并在200分钟的紫外线照射下主要形成(Cz4)。仅在脱气条件下观察到第二小转化途径,其产生Ald作为唯一产物。