An efficient method for the copper-catalyzedtrifluoromethylation of terminal alkenes with an electrophilic trifluoromethylating reagent has been developed. The reactions proceeded smoothly to give trifluoromethylated alkenes in good to excellent yields. The results provided a versatile approach for the construction of Cvinyl-CF3 bonds without using prefunctionalized substrates.
A visible-light-induced decarboxylative trifluoromethylation of alpha,beta-unsaturatedcarboxylicacids, which uses the Togni reagent as the CF3 source is disclosed. The corresponding trifluoromethylated alkenes were obtained in moderate to high yields with excellent functional group tolerance at ambient temperature. Preliminary mechanistic analyses suggest a radical-type mechanism.
An efficient decarboxylative trifluoromethylation of α,β-unsaturated carboxylic acids using the Langlois reagent as a trifluoromethyl precursor has been achieved by an electro-oxidative strategy. Under catalyst-free and external oxidant-free electrolysis conditions, a series of Cvinyl-CF3 compounds are obtained with a high regioselectivity in good yields. The successful trapping of the CF3 radical
An efficient method for the iron(III) porphyrincatalyzed olefination of various aldehydes with 2,2,2‐trifluorodiazoethane (CF3CHN2) under neutral conditions has been developed. This reaction is an important supplement to the synthetic applications of CF3CHN2.
The present invention relates to novel pesticidal arylpyrrolidine compounds (arylpyrrolidines) having the general formula (I) wherein A, X1, X2, X3, X4, R1, R2, R3, R4, and G are as defined in the application and their use as pesticide, in particular for combating animal pests which occur in the agricultural and / or the veterinary field, as well as to a preparation methods for preparing such compounds.