The chemistry of poly(trifluoromethyl)benzenes. Part II. Reactions of 1,2,3,5-tetrakis(trifluoromethyl)benzene with organolithium compounds

Article abstract of DOI:10.1016/S0022-1139(00)80076-7

1,2,3,5-Tetrakis(trifluoromethyl)benzene reacts with phenyl-lithium or t-butyl-lithium to give mixtures of de-aromatised products, derivatives of 2,5- and 2,4-cyclohexadiene-1-ylidene of molecular composition C10H2F10Ph2, C10H2F9Ph3, C10H2F10Bu2^t and C10H3F10Bu^t.The X-ray crystal structure of the triphenyl derivative has been obtained.The 1H, 19F and 13C NMR data provide a satisfactory proof for the structures of the other compounds.