Preparation of sterically protected 3,4-bis[(2,4,6-tri-t-butylphenyl)phosphinidene]-1,2-bis[4-(4-vinylphenyl)butyl]c yclobutene and its polymers

Chemistry Letters

Volumn , Issue 3, 2001, Pages 248-249

  Yamada, Naoki ^a   Toyota, Kozo ^a   Yoshifuji, Masaaki ^a  

^a TOHOKU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035609311     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2001.248     Document Type: Article

References (22)

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4. "Multiple Bonds and Low Coordination in Phosphorus Chemistry," ed. by M. Regitz and O. J. Scherer, Georg Thieme Verlag, Stuttgart (1990); K. B. Dillon, F. Mathey, and J. F. Nixon, "Phosphorus: The Carbon Copy," John Wiley & Sons, Chichester (1998).
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7. M. Yoshifuji, I. Shima, N. Inamoto, K. Hirotsu, and T. Higuchi, J. Am. Chem. Soc., 103, 4587 (1981); 104, 6167 (1982); M. Yoshifuji, K. Toyota, K. Shibayama, and N. Inamoto, Tetrahedron Lett., 25, 1809 (1984); M. Yoshifuji, K. Toyota, and N. Inamoto, J. Chem. Soc., Chem. Commun., 1984, 689.
8. M. Yoshifuji, I. Shima, N. Inamoto, K. Hirotsu, and T. Higuchi, J. Am. Chem. Soc., 103, 4587 (1981); 104, 6167 (1982); M. Yoshifuji, K. Toyota, K. Shibayama, and N. Inamoto, Tetrahedron Lett., 25, 1809 (1984); M. Yoshifuji, K. Toyota, and N. Inamoto, J. Chem. Soc., Chem. Commun., 1984, 689.
9. K. Toyota, K. Tashiro, and M. Yoshifuji, Chem. Lett., 1991, 2079; K. Toyota, K. Tashiro, M. Yoshifuji, I. Miyahara, A. Hayashi, and K. Hirotsu, J. Organomet. Chem., 431, C35 (1992); K. Toyota, K. Masaki, T. Abe, and M. Yoshifuji, Chem. Lett., 1995, 221; M. Yoshifuji, Y. Ichikawa, K. Toyota, E. Kasashima, and Y. Okamoto, Chem. Lett., 1997, 87; M. Yoshifuji, Y, Ichikawa, N. Yamada, and K. Toyota, Chem. Commun., 1998, 27.
10. K. Toyota, K. Tashiro, and M. Yoshifuji, Chem. Lett., 1991, 2079; K. Toyota, K. Tashiro, M. Yoshifuji, I. Miyahara, A. Hayashi, and K. Hirotsu, J. Organomet. Chem., 431, C35 (1992); K. Toyota, K. Masaki, T. Abe, and M. Yoshifuji, Chem. Lett., 1995, 221; M. Yoshifuji, Y. Ichikawa, K. Toyota, E. Kasashima, and Y. Okamoto, Chem. Lett., 1997, 87; M. Yoshifuji, Y, Ichikawa, N. Yamada, and K. Toyota, Chem. Commun., 1998, 27.
11. K. Toyota, K. Tashiro, and M. Yoshifuji, Chem. Lett., 1991, 2079; K. Toyota, K. Tashiro, M. Yoshifuji, I. Miyahara, A. Hayashi, and K. Hirotsu, J. Organomet. Chem., 431, C35 (1992); K. Toyota, K. Masaki, T. Abe, and M. Yoshifuji, Chem. Lett., 1995, 221; M. Yoshifuji, Y. Ichikawa, K. Toyota, E. Kasashima, and Y. Okamoto, Chem. Lett., 1997, 87; M. Yoshifuji, Y, Ichikawa, N. Yamada, and K. Toyota, Chem. Commun., 1998, 27.
12. K. Toyota, K. Tashiro, and M. Yoshifuji, Chem. Lett., 1991, 2079; K. Toyota, K. Tashiro, M. Yoshifuji, I. Miyahara, A. Hayashi, and K. Hirotsu, J. Organomet. Chem., 431, C35 (1992); K. Toyota, K. Masaki, T. Abe, and M. Yoshifuji, Chem. Lett., 1995, 221; M. Yoshifuji, Y. Ichikawa, K. Toyota, E. Kasashima, and Y. Okamoto, Chem. Lett., 1997, 87; M. Yoshifuji, Y, Ichikawa, N. Yamada, and K. Toyota, Chem. Commun., 1998, 27.
13. K. Toyota, K. Tashiro, and M. Yoshifuji, Chem. Lett., 1991, 2079; K. Toyota, K. Tashiro, M. Yoshifuji, I. Miyahara, A. Hayashi, and K. Hirotsu, J. Organomet. Chem., 431, C35 (1992); K. Toyota, K. Masaki, T. Abe, and M. Yoshifuji, Chem. Lett., 1995, 221; M. Yoshifuji, Y. Ichikawa, K. Toyota, E. Kasashima, and Y. Okamoto, Chem. Lett., 1997, 87; M. Yoshifuji, Y, Ichikawa, N. Yamada, and K. Toyota, Chem. Commun., 1998, 27.
14. E. Bosies, A. Eswein, F. Grams, and H.-w. Krell, Ger. Offen. DE, 19548624 (1997); Chem. Abstr., 127: 121746 (1997).
15. 16, 184.1252.
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18. w = 0.091. Crystallographic data have been deposited at the Cambridge Crystallographic Data Centre (no. CCDC-156637).
19. C. K. Johnson, ORTEP-II, Oak Ridge National Laboratory Report, ORNL-TM-5138, Oak Ridge, TN, 1976.
20. 3J = 8.0 Hz, arom.), and 7.32 (4H, m-Mes*).
21. 1H NMR spectrum, molecular weight measurement (by GPC), and MALDI-TOF MS indicate formation of a mixture of products, whose molecular weights correspond to [2×(E,E)-2b+n(t-Bu)+nH; n = 1-5], however, attempted separation and characterization have been unsuccessful because of the low yield.
22. A MALDI-TOF MS showed only weak signals less than 12000, including those corresponding to dodecamer (Found: m/z 11030; Calcd: 11024) and undecamer (Found: mlz 10107; Calcd: 10105).