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Wood technlogy.. Chemical aspects by Goldstein I.S. (ed.)

By Goldstein I.S. (ed.)

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Tanaka, K Imaeda, H. Inokuchi, M. Sano: J. Org. Chern. 57, 5517 (1992) 41. Y. Yamashita, K Ono, S. Tanaka, K Imaeda, H. Inokuchi: Adv. Mater. 6, 295 (1994) 42. Y. Yamashita, S. Tanaka, K Imaeda: Synth. Met. 71, 1965 (1995) 43. Y. Yamashita, M. Tomura, S. Tanaka, K Imaeda: Synth. Met. 86, 1795 (1997) 44. R. J. Moore, M. J. T. Fraser, W. B. 1. Karaulov: Angew. Chern. Int. Ed. Engl. 29, 1450 (1990) 45. A. Aumiiller, S. Hiinig: Liebigs Ann. Chern. 618 (1984) 46. U. Schubert, S. Hiinig, A. Aumiiller: Liebigs Ann.

When the biphenyl skeleton of 572+ was replaced by a diphenyl ether moiety, 2e-reduction no longer gave the hexaphenylethane derivative 58 (Fig. 22) with a 7-membered ring. Instead, the 9-membered cyclic peroxides 59 were isolated in good yield upon reduction of bis(xanthenylium)-type dications 602+ under air. It is interesting to note that 59 regenerated 602+ effectively through an "oxidative deoxygenation" reaction, a rather paradoxical mode of redox reaction. The pair of 59 and 602+ represents a new type of chromic system that reversibly traps and expels O 2 gas on electrochemical input [100].

Engl. 39, 3349 (2000) 40 Kenji Matsuda, Masahiro Irie 3. -M. Lehn: Supramolecular Chemistry: Concepts and Perspectives (VCH, Weinheim, 1995) 4. M. ): Photochromism: Memories and Switches, Chern. Rev. 100, whole of issue 5 (2000) 5. H. Brown: Photochromism (Wiley Interscience, New York, 1971) 6. H. irr, H. Bouas-Laurent: Photochromism: Molecules and Systems (Elsevier, Amsterdam, 1990) 7. M. M. H. F. Erlanger: Science 214, 70 (1981) 8. M. Irie, Y. Hirano, S. Hashimoto, K. Hayashi: Macromolecules 14, 262 (1981) 9.

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