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Studies on the mechanism of the stereospecific polymerization. Asymmetric-induction polymerization of benzofuran by use of optically active organo-stannic compounds by Takeda, Yoshimitsu ;Hayakawa, Yoshihiro ;Fueno, Takayuki ;Furukawa, Junji is a Chemistry article available to read on EtoBox.

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In connection with our previous study on the system triethylaluminum/stannic chloride as a catalyst for the polymerization of vinyl ethers, the effects of ether compounds on the ionic properties of the binary system were investigated. Furthermore, benzofuran was polymerized with the aid of the ternary systems involving various asymmetric compounds. (-)Menthoxytriethyltin was found to be effective as third component fo'r preparation of polybenzofuran with high optical activity. From data of the elemental analyses and the electric conductivity measurements of the catalytic system as well as the polymerization results the properties of the counter-ion in the asymmetric polymerization are discussed. a ZUSAMMEN FASSUNG: I m Zusammenhang mit unseren friiheren Arbeiten iiber die Polymerisation von Vinylathern mit dem System Aluminiumtriathyl/Zinnchlorid untersuchten wir die Wirkung verschiedener Ather auf die Ioneneigenschaften dieses biniiren Katalysators. Dariiber hinaus wurde Benzofuran mit Hilfe ternarer Systeme, die verschiedene asymmetrische Verbindungen enthielten, polymerisiert. (-)Menthoxytriathylzinn ergab Polybenzofuran mit hoher optischer Aktivitat. Aus elementaranalytischen D

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Author

Takeda, Yoshimitsu ;Hayakawa, Yoshihiro ;Fueno, Takayuki ;Furukawa, Junji

Publisher

Wiley (John Wiley & Sons); Wiley (ISSN 0025-116X)

Published

1965

Language

EN

Field

Chemistry (Physical Sciences)