Porphyrazinehexamines and Dinitroporphyrazines: Synthesis, Characterization, and Complementary Electrochemistry
作者:Hanlin Nie、Anthony G. M. Barrett、Brian M. Hoffman
DOI:10.1021/jo9907890
日期:1999.9.1
Ni(OAc)(2) in chlorobenzene and dimethylformamide. Both free-base and nickel porphyrazines (6 and 7) were readily nitrated by nitrogen dioxide in CH(2)Cl(2), yielding dinitroporphyrazines 18 and 19, respectively. Electrochemical studies have shown that porphyrazinehexamine 2 is easy to oxidize, having the first oxidation at E(1/2) = - 0.18 V, which is 0.91 and 1.04 V lower than that of 4 and 6, respectively
Decapitation of dihydroporphyrazinediol derivatives: synthesis and X-ray structure of a novel seco-porphyrazine
作者:Hanlin Nie、Charlotte L. Stern、Brian M. Hoffman、Anthony G. M. Barrett
DOI:10.1039/a900555b
日期:——
The dihydroporphyrazinediol 8, which was prepared by Linstead macrocyclisation of 2,5-diiminopyrrolidine with 3,4-bis(4-tert-butylphenyl)pyrroline-2,5-diimine, followed by TFA demetallation and OsO4 tetroxide mediated dihydroxylation, underwent reaction with Ni(OAc)2 at 100 °C in the presence of air to give the novel seco-porphyrazine 10, the structure of which was established by an X-ray crystallographic study.