Simulated sunlight-induced photodegradations of triasulfuron and cinosulfuron in aqueous solutions was written by Vulliet, E.;Emmelin, C.;Grenier-Loustallot, M. F.;Paiesse, O.;Chovelon, J. M.. And the article was included in Journal of Agricultural and Food Chemistry in 2002.Safety of 2-(2-Chloroethoxy)benzenesulfonamide This article mentions the following:
To elucidate the photochem. behavior of two sulfonylureas (cinosulfuron and triasulfuron) for which the chem. formulas are relatively close, their photodegradation was studied in water. All experiments were carried out under laboratory conditions using a xenon arc lamp as the source of radiation to simulate environmental conditions. Polychromatic quantum efficiencies were calculated to determine the photochem. pesticide lifetimes at pH 7, and a comparison with hydrolysis lifetimes has been performed. The results obtained showed clearly that at pH 7, photodegradation becomes a more important pathway than chem. degradation HPLC-DAD was used to study the kinetics for both sulfonylureas and their photoproducts, whereas HPLC-MS (ESI in pos. and neg. modes) was used to identify photoproducts. These results suggest that the photodegradation of these two sulfonylureas proceeds via a number of reaction pathways: (1) cleavage of the sulfonylurea bridge; (2) desulfonylation, which can proceed either by a carbon-sulfur cleavage or a nitrogen-sulfur cleavage; (3) O-demethylation of methoxy moieties present on the triazine ring; and (4) O-dealkylation of benzene derivatives In addition, it was found that the desulfonylation represented the main step and that it was wavelength dependent. In the experiment, the researchers used many compounds, for example, 2-(2-Chloroethoxy)benzenesulfonamide (cas: 82097-01-6Safety of 2-(2-Chloroethoxy)benzenesulfonamide).
2-(2-Chloroethoxy)benzenesulfonamide (cas: 82097-01-6) belongs to amides. Amides can be viewed as a derivative of a carboxylic acid RC(=O)OH with the hydroxyl group –OH replaced by an amine group −NR′R″; or, equivalently, an acyl (alkanoyl) group RC(=O)− joined to an amine group. The presence of the amide group –C(=O)N– is generally easily established, at least in small molecules. It can be distinguished from nitro and cyano groups in IR spectra. Amides exhibit a moderately intense νCO band near 1650 cm−1. By 1H NMR spectroscopy, CONHR signals occur at low fields. In X-ray crystallography, the C(=O)N center together with the three immediately adjacent atoms characteristically define a plane.Safety of 2-(2-Chloroethoxy)benzenesulfonamide
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics