Vialaton, Delphine; Baglio, Daniela; Paya-Perez, Ana; Richard, Claire published the artcile< Photochemical transformation of acifluorfen under laboratory and natural conditions>, Name: 2-Chloro-4-(trifuloromethyl)phenol, the main research area is acifluorfen photolysis photoproduct decarboxylation.
Acifluorfen was irradiated in pure water at various excitation wavelengths and pH values. Numerous photoproducts were obtained which were identified by [1H]NMR and/or HPLC-MS/MS. The main reaction pathways were photo-decarboxylation, photo-cleavage of the ether bonding with formation of phenolic compounds, photo-dechlorination and photo-Claisen type rearrangement. Decarboxylation was observed in acidic and neutral media whereas cleavage of the ether bonding dominated in basic media. The photo-Claisen type rearrangement only occurred on excitation at short wavelengths. The quantum yield of photolysis was significantly lower at 313nm (6.1 × 10-5) than at 254nm (2.0 × 10-3). The photoreactivity of acifluorfen was then studied in conditions approaching environmental conditions. Acifluorfen was dissolved in pure water, in water containing humic substances or in a natural water, and exposed to solar light in June at Clermont-Ferrand (latitude 46°N). In pure water, the half-life was estimated at 10 days and photo-decarboxylation accounted for 30% of the conversion. The presence of humic substances (10 mg litre-1) did not affect the rate of photo-transformation. However, the half-life of acifluorfen dissolved in the natural water was only 6.8 days.
Pest Management Science published new progress about Decarboxylation (photo). 35852-58-5 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H4ClF3O, Name: 2-Chloro-4-(trifuloromethyl)phenol.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics