855792-96-0Relevant academic research and scientific papers
Cyclic 2,12-porphyrinylene nanorings as a porphyrin analogue of cycloparaphenylenes
Jiang, Hua-Wei,Tanaka, Takayuki,Mori, Hirotaka,Park, Kyu Hyung,Kim, Dongho,Osuka, Atsuhiro
, p. 2219 - 2222 (2015)
β-to-β Directly linked cyclic Ni(II) porphyrin trimer, tetramer, and pentamer ([3]CP, [4]CP, and [5]CP) have been synthesized by reaction of a 2,12-diborylated Ni(II) porphyrin with Pt(cod)Cl2 followed by reductive elimination. The structures of these cyclic porphyrin arrays have been revealed by X-ray diffraction analysis. The strain energies of these cyclic oligomers are calculated to be 77, 57, and 47 kcal/mol for [3]CP, [4]CP, and [5]CP, respectively. Intramolecular excitation energy hopping was observed between the 3(d,d) states of the Ni(II) porphyrins with rates of 3.0, 4.4, and 4.6 ps for [3]CP, [4]CP, and [5]CP, respectively, reflecting the close proximity of the Ni(II) centers.
Highly regioselective Ir-catalyzed β-borylation of porphyrins via C-H bond activation and construction of β-β-linked diporphyrin
Hata, Hiroshi,Shinokubo, Hiroshi,Osuka, Atsuhiro
, p. 8264 - 8265 (2007/10/03)
Highly regioselective borylation of 5,15-diaryl- and 5,10,15-triarylporphyrins has been achieved by the reaction with bis(pinacolato)diborane under iridium catalysis. Borylated porphyrins are a useful building block for constructing porphyrin arrays, hence offering an effective route to β-functionalized porphyrins. Copyright
