@article{oai:nagoya.repo.nii.ac.jp:00028622,
 author = {Liu, Si‐Yu and Tanaka, Hiroko and Nozawa, Ryo and Fukui, Norihito and Shinokubo, Hiroshi},
 issue = {32},
 journal = {Chemistry – A European Journal},
 month = {Jun},
 note = {The synthesis of antiaromatic Ni^II–norcorroles having primary, secondary, and tertiary alkyl groups at the reactive meso‐positions was attempted. Reductive coupling of a Ni^II–dipyrrin precursor provided Ni^II–meso‐dihexylnorcorrole, which underwent substantial degradation on silica gel. Introduction of tert‐butyl groups was unsuccessful due to the difficult preparation of the corresponding dipyrrin precursor. Meanwhile, Ni^II–norcorroles with isopropyl and cyclohexyl groups were isolated as stable molecules under ambient conditions. Furthermore, we found that oxidation of Ni^II–meso‐dialkylnorcorroles with hydrogen peroxide in the presence of sodium carbonate gave Ni^II–5‐oxaporphyrins(2.0.1.0). In contrast, oxidation of Ni^II–meso‐dimesitylnorcorrole under the same reaction conditions gave 10‐oxaporphyrin(1.1.1.0). The contrasting reactivity can be attributed to the steric congestion around the meso‐positions., ファイル公開：2020-06-07},
 pages = {7618--7622},
 title = {Synthesis of meso-Alkyl-Substituted Norcorrole–Ni^II Complexes and Conversion to 5-Oxaporphyrins (2.0.1.0)},
 volume = {25},
 year = {2019}
}