873840-20-1Relevant academic research and scientific papers
[24]Pentaphyrin(2.1.1.1.1): A strongly antiaromatic pentaphyrin
Yoneda, Tomoki,Hoshino, Tyuji,Neya, Saburo
, p. 10737 - 10741 (2017)
[24]Pentaphyrin(2.1.1.1.1) 1 was synthesized by dehydrogenation of dihydropentaphyrin(2.1.1.1.1) 2 as the first example of vinylogous pentaphyrin. Pentaphyrin 1 takes a roughly planar structure and shows strong antiaromatic character, reflecting a 24π-con
Stable meso-Aryl β-Alkyl Hybrid Sapphyrin with a Warped π-Conjugation Circuit and Neo-Confused Sapphyrin–Silver(I) Complex
Mori, Daiki,Yoneda, Tomoki,Hoshino, Tyuji,Neya, Saburo
, p. 934 - 938 (2018)
A meso-aryl and β-alkyl substituted sapphyrin and its rhodium(I) and silver complexes were synthesized. This sapphyrin was so stable that the non-inverted and warped structure could be analyzed by X-ray crystallography even in its neutral state. Its bis-r
meso-Diketopyripentaphyrin and Diketopyrihexaphyrin as Macrocyclic Tripyrrinone Ligands for NiII Ions
Mori, Daiki,Yoneda, Tomoki,Suzuki, Masaaki,Hoshino, Tyuji,Neya, Saburo
, p. 4169 - 4173 (2019)
We report expanded porphyrins with pyridine rings and two neighboring carbonyl groups, which allow NiII ions to coordinate to the tripyrrinone-type NNNO coordination structure with Ni?O bonds. The selectivity of tripyrrinone is superior to othe
Stable Non-fused [22]Pentaphyrins and A Fused [24]Pentaphyrin Displaying Crystal Polymorphism between Hückel and M?bius Structures
Yoneda, Tomoki,Hoshino, Tyuji,Neya, Saburo
, p. 405 - 409 (2017)
Partially β-substituted and meso-tetrakis(pentafluorophenyl)-substituted [22]pentaphyrins 11 and 12 were synthesized by acid-catalyzed condensation of a meso-C6F5-substituted tripyrrane dicarbinol with β-alkylated dipyrromethanes. Th
Internally Bridged Hückel Aromatic [46]Decaphyrins: (Doubly-Twisted-Annuleno)Doubly-Twisted-Annulene Variants
Soya, Takanori,Osuka, Atsuhiro
, p. 5173 - 5176 (2019/03/28)
Internally 3,3′-biphenyl-, 2,2′,5,5′-bithiophene-, and 2,5-thieno[3,2-b]thiophene-bridged [46]decaphyrins were prepared. In addition to the global 46π-conjugated circuits, the internal core-modified [32]heptaphyrin- and [30]hexaphyrin moieties in 2,2′,5,5′-bithiophene- and 2,5-thieno[3,2-b]thiophene-bridged [46]decaphyrins also possess doubly twisted topologies (|Lk|=2) and are regarded as (doubly-twisted-annuleno)doubly-twisted-annulene variants. All these decaphyrins display distinct Hückel aromaticity owing to the global 46π-electronic networks but the contributions of the local half circuits were almost negligible due to the perpendicular orientation of the bridges.
N-fusion reaction sequence of heptaphyrin(1.1.1.1.1.1.1): Singly, doubly, and quadruply N-fused heptaphyrins
Saito, Shohei,Osuka, Atsuhiro
, p. 9095 - 9102 (2007/10/03)
meso-Heptakis(pentafluorophenyl) heptaphyrin(1.1.1.1.1.1.1) (1) was prepared by a stepwise route in 39% yield and its unique N-fusion reaction (NFR) sequence has been revealed; this reaction leads to singly-, doubly-, and quadruply N-fused heptaphyrins (4
Internally 1,4-phenylene-bridged meso aryl-substituted expanded porphyrins: The decaphyrin and octaphyrin cases
Anand, Venkataramanarao G.,Saito, Shohei,Shimizu, Soji,Osuka, Atsuhiro
, p. 7244 - 7248 (2007/10/03)
Current affairs: Incorporation of a 1,4-phenylene bridge into meso aryl-substituted decaphyrin and octaphyrin has a profound impact on the structural and electronic properties of the macrocycles. Bridged decaphyrin has two oxidation states, one of which s
