4-oxo-2,3,5,6-tetrafluorocyclohexa-2,5-dienylidene - A highly electrophilic triplet carbene
The 4-oxocyclohexa-2,5-dienylidenes are an interesting class of highly electrophilic carbenes. We investigated the reactivity of the 2,3,5,6-tetrafluorinated and -tetrachlorinated derivatives 1b and 1c with small molecules under conditions of matrix isola