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Rieke-Zinc Zn -Mediated Polymerization

From Chen, T.-A., Wu, X., and Rieke, R.D., J. Am. Chem. Soc., 117 233, 1995. Copyright 1995, American Chemical Society. Washington, D.C. With permission. [Pg.257]

Procedure B. Finely cut (0.15 g, 22.0 mmol) and a stoichiometrical amount of naphthalene (2.80 g, 22.0 mmol) were weighed into a 100-ml flask, and ZnCl2 (1.5 g, 11.0 mmol) was weighed into a 50-ml flask. The Lithium and naphthalene were dissolved in THF (20 ml) in ca. 2h. ZnCl2 was dissolved in THF (20 ml) and the solution was transferred into the flask with lithium naphthalide via cannula over 10 min. The reaction mixture was further stirred for 1 h, and the resulting black suspension of active zinc thus prepared was ready for use. [Pg.257]

3 Ni-Catalyzed preparation of regioregular HT poly(3-alkylthiophenes) (HT-388) from 2,5-dibromoalkylthiophenes (389) and Rieke zinc (Zn ) (Chart 2.164). [Pg.258]


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