Photolysis and cycloaddition reactivity of diferrocenyl substituted cyclopentadienone
Xiaoyong Zhang , Limin Han , Yuanyuan Gao , Jiale Shi , Quanling Suo
Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (5) : 775 -780.
The photolysis results of new diferrocenyl substituted cyclopentadienone(3) show that sunlight and air play an important role in the decomposition of compound 3, and two new compounds, 2-cyclopentenone(4) and α-pyrone(5), were obtained via photolysis of compound 3. The photolysis process was investigated by 1H NMR, and a plausible mechanism for the formation of compound 5 was deduced. The cycloaddition reactions of substituted cyclopentadienones(3, 7, 9) with maleimide gave substituted imides 8, 10, 11, 12 and an unprecedented diferrocenyl substituted 1H-pyrrol-3(2H)-one derivative 13, respectively. The structures of compounds 4, 5, 8, 10, 11, 12 and 13 were confirmed by X-ray single crystal diffraction analysis technique.
Cyclopentadienone / Reactivity / Photolysis / Cycloaddition / Crystal structure
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