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References
J. K. Stille, “Encyclopedia of Polymer Science and Technology,” Vol. 11, Interscience: New York, 1969, p 389.
Y. Ito, E. Ihara, M. Murakami, and M. Shiro, J. Am. Chem. Soc., 112, 6446 (1990).
W. Drenth and R. J. M. Nolte, Acc. Chem. Res. 12, 30 (1979) and references cited therein.
Though 3a was not so stable as 5, 3a was identified by isolation and its 1H NMR spectrum; 1H NMR (CDCl3) δ 0.89 (t, JP-H=3.9 Hz, 18 H), 2.40 (s, 3 H), 2.44 (s, 3H), 2.54 (s, 3H), 2.70 (s, 3H), 2.85 (s, 3H), 7.3–7.7 (m, 4H).
5: mp 178°C (dec). IR (KBr) 2964, 2900, 1508, 1248, 1158, 952, 848, 734 cm−1; 1H NMR (CDCl3) δ −0.19 (s, 9H), 0.04 (s, 9H), 0.89 (t, JP-H=3.9 Hz, 18H), 2.60 (s, 3H), 2.67 (s, 2H), 2.75 (s, 2H), 7.05 (d, J=7.4 Hz, 1H), 7.17 (d, J=7.4 Hz, 1H), 7.3–7.7 (m, 4H); 13C NMR (CDCl3) δ −1.43, −0.80, 12.41 (t, JP-C=13.9 Hz), 20.55, 20.68, 22.11, 124.75, 125.88, 127.00, 128.09 (t, JP-C=3.4 Hz), 128.80, 131.96, 133.59, 135.04, 136.45, 137.85, 139.58, 139.76, 153.04. Anal. Calcd for C29H49ClN2NiP2Si2: C, 54.60%; H, 7.74%; N, 4.39%. Found: C, 54.61%; H, 7.90%; N, 4.44%.
The ortho substituents of aryl group were found to have an effect to stabilize [1-(arylimino)alkyl]metal.
M. Murakami, H. Ito, and Y. Ito, J. Org. Chem., 53, 4158 (1988).
M. Murakami, H. Ito, W. A. W. A. Bakar, A. B. Baba, and Y. Ito, Chem. Lett., 1603 (1989).
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Ito, Y., Ihara, E. & Murakami, M. Living Polymerization of 1,2-Diisocyanoarenes Promoted by (Quinoxalinyl)nickel Complexes. Polym J 24, 297–299 (1992). https://doi.org/10.1295/polymj.24.297
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DOI: https://doi.org/10.1295/polymj.24.297
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