摘要:
Three photochromic fulgides, E-1-(3',4',5'-trimethoxyphenyl)ethylidene(isopropylidene)succinic anhydride (5) and a mixture of E- and Z-1-(2',4',6'-trimethylphenyl)methylidene(isopropylidene)succinic anhydrides (10) and (11), were synthesised and reacted with chromium hexacarbonyl to give mixtures of the corresponding tricarbonyl-eta(6)-fulgide chromium(0) complexes. No evidence for formation of the corresponding diene or enone complexes was obtained. Irradiation of the purified chromium arene complexes gave E/Z isomerisation and decomposition of the complexes without photochromic ring closure.