Hexahelicenophanes and their racemization

Angewandte Chemie - International Edition

Volumn 37, Issue 15, 1998, Pages 2110-2113

  Meier, Herbert ^a   Schwertel, Manfred ^a   Schollmeyer, Dieter ^a  

^a JOHANNES GUTENBERG UNIVERSITY   (Germany)

Author keywords

Cyclophanes; Helica structures; Kinetics; Racemization

Indexed keywords

EID: 0032541258     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(19980817)37:15<2110::AID-ANIE2110>3.0.CO;2-K     Document Type: Article

References (25)

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10. See also M. Nakazaki, K. Yamamoto, T. Ikeda, T. Kitsuki, Y. Okamoto, J. Chem. Soc. Chem. Commun. 1983, 787-788.
11. 13C NMR data correspond largely to that of 7a.
12. L. Liu, B. Yang, T. J. Katz, M. K. Pointdexter, J. Org. Chem. 1991, 56, 3769-3775.
13. +].
14. 1H NMR and MS data.
15. See F. Mikeš, G. Boshart, E. Gil-Av, J. Chromatog. 1997, 122, 205-221, and references therein.
16. [15]
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19. M. Schwertel, Dissertation, Universität Mainz 1997.
20. 3. Crystallographic data (without structure factors) for the structures reported in this publication have been deposited with the Cambridge Crystallographic Data Centre as supplementary publication no. CCDC-408279. Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax: (+ 44) 1223-336-033; e-mail: deposit@ccdc.cam.ac.uk).
21. C. de Rango, G. Tsoucaris, J. P. Declerq, G. Germain, J. P. Putzeys, Cryst. Struct. Commun. 1973, 2, 189-192; J. Navaza, G. Tsoucaris, G. Le Bas, A. Navaza, C. de Rango, Bull. Soc. Chim. Belg. 1979, 88, 863-870.
22. C. de Rango, G. Tsoucaris, J. P. Declerq, G. Germain, J. P. Putzeys, Cryst. Struct. Commun. 1973, 2, 189-192; J. Navaza, G. Tsoucaris, G. Le Bas, A. Navaza, C. de Rango, Bull. Soc. Chim. Belg. 1979, 88, 863-870.
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24. R. H. Janke, G. Haufe, E.-U. Würthwein, J. H. Borkent, J. Am. Chem. Soc. 1996, 118, 6031-6035.
25. Force field calculations (PC Model 4.0, Serena Software)[16] are in accordance with models.