Аннотация:Catalytic thermolysis of ferrocenyl-2-pyrazolines gave 1,2-arylferrocenyl- and 1,2-diferrocenylcyclopropanes. All the latter compounds were found to show varying antiinflammatory activity when they were given intraperitoneally. When given in a dose of 25 mg/kg, they were superior to brufen and amidopyrine in a dose of 100 mg/kg and isoeffective to indomethacin in a dose of 10 mg/kg. 1,2-Diferrocenylcyclopropanes retained its activity when it was given orally. 3-Methyl-1,2-diferrocenylcyclopropane had also analgesic activity. The compounds under study were virtually non-toxic.