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Schrage BR, Chanawanno K, Crandall LA, Ziegler CJ. The synthesis of a hexameric expanded hemiporphyrazine. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s1088424619500901] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Although the chemistry of expanded porphyrins is well developed, there has been significantly less work on expanded isoindoline based macrocycles such as hemiporphyrazines. In this report we present the synthesis and characterization of a new hexameric expanded hemiporphyrazine which we refer to as hexahemiporphyrazine. The synthesis incorporated bis(6-amino-2-pyridyl)amine as a starting material, which could be produced from 2,6-diaminopyridine using melt reaction conditions. Bis(6-amino-2-pyridyl)amine can adopt a three different conformations, two of which are observed in the free base and protonated form, and the third in the backbone of hexahemiporphyrazine. Reaction of bis(6-amino-2-pyridyl)amine and diiminoisoindoline in the presence of a catalytic amount of BF3 produces the hexihemiporphyrazine macrocycle, which was characterized spectroscopically and by X-ray crystallography. Structure elucidation reveals two inverted pyridine rings in a configuration reminiscent of that seen in hexaphyrin, however hexahemiporphyrazine lacks cross conjugation across the macrocycle.
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Affiliation(s)
| | - Kullapa Chanawanno
- Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
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Danilova EA, Kudayarova TV, Islyaikin MK, Koifman OI. Synthon-Based Approach to the Design of Macroheterocyclic Compounds Using Diaminothiadiazoles and Diamonotriazoles. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218090438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Iizuka F, Kage Y, Kobayashi N, Furuta H, Shimizu S. Phenylene-Bridged Expanded Porphyrazines. Chempluschem 2017; 82:1021-1024. [PMID: 31961597 DOI: 10.1002/cplu.201600482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/07/2016] [Indexed: 11/07/2022]
Abstract
Novel expanded porphyrazines comprising o- and p-phenylene units were synthesized from self-condensation reactions of acyclic [2+1]-type precursors prepared from 1,3-diiminoisoindoline and the corresponding phenylenediamines. Möbius and Hückel topological structures of [4+2]-type and [3+2]-type expanded porphyrazines, respectively, were elucidated by X-ray crystallography. Despite the Möbius and Hückel [4n]π-electron systems, these expanded porphyrazines are virtually nonaromatic as a result of their flexible structures in solution, which may diminish intrinsic aromaticity and antiaromaticity.
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Affiliation(s)
- Fumiya Iizuka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Yuto Kage
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Nagao Kobayashi
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan.,Faculty of Textile Science and Technology, Shinshu University, Ueda, 386-8567, Japan
| | - Hiroyuki Furuta
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University, Fukuoka, 819-0395, Japan
| | - Soji Shimizu
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan.,Center for Molecular Systems (CMS), Kyushu University, Fukuoka, 819-0395, Japan
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Luminescent 2D→3D porous zinc complex based on bis[4-(pyridin-4-yl)phenyl]amine and benzene-p-dicarboxylic acid. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis of trinuclear CuII-complex with tris(4-triphenylmethylphenoxy)-substituted hemihexaphyrazine and radioprotective properties of its water-soluble form. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1049-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang MD, Zheng BH, Jiao Y, Chen MD. A trilaminar cobalt coordination network with trinuclear and uninuclear building units. MENDELEEV COMMUNICATIONS 2014. [DOI: 10.1016/j.mencom.2014.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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