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New Stable Neutral Radical with Intramolecular Hydrogen Bonding:  Synthesis and Characterization of 2,5,8-Tri-tert-butyl-7-hydroxy-6-oxophenalenoxyl

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journal contribution
posted on 11.09.2001, 00:00 by Yasushi Morita, Suguru Maki, Kozo Fukui, Tomohiro Ohba, Junya Kawai, Kazunobu Sato, Daisuke Shiomi, Takeji Takui, Kazuhiro Nakasuji
A new stable neutral radical with intramolecular hydrogen bonding, 2,5,8-tri-tert-butyl-7-hydroxy-6-oxophenalenoxyl, was synthesized from the corresponding dihydroxyphenalenone and isolated as a stable solid under air atmosphere at room temperature. The structure was unequivocally determined by means of IR spectra, ESR/ENDOR techniques, and DFT calculations.

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