Synthesis and Structure Characterization of 3-Ferrocenyl Dihydropyrazole Derivatives

A series of 3-diferrocenyl dihydropyrazole derivatives were synthesized from acetylferrocene.The structures of these compounds were characterized by IR,1H NMR and MS.The crystal structure of compound 2b was determined via X-ray single-crystal diffraction.Compound 2b belongs to the triclinic system with space group P1,and the unit cell parameters are a=0.9275(4) nm,b=1.1327(5) nm,c=1.1912(5) nm,α=88.67(2)°, β=79.925(18)°,γ=70.345(18)°,V=1.1595(9) nm3,Z=2,F(000)=560,D_c=1.553 g/ cm3,μ=1.279 mm-1,R_1=0.0351,wR_2=0.0934.