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Some New Cocatalysts for the Polymerizations of Four- and Five-membered Cyclic Ethers by Lewis Acid Catalyst by Saegusa, Takeo ;Imai, Hirosuke ;Furukawa, Junji is a Chemistry article available to read on EtoBox.

What is Some New Cocatalysts for the Polymerizations of Four- and Five-membered Cyclic Ethers by Lewis Acid Catalyst about?

The ring-opening polymerizations of oxacyclobutane, 3,3-disubstituted oxacyclobutanes, and tetrahydrofuran (THF) are induced by cationic catalysts, for whichthe mechanism of propagation via trialkyloxonium ion intermediates have been suggested lB2). In the polymerization of THF, most LEWIS acids themselves are of little catalytic activity, and several cocatalysts were proposed by MEERWEIN~) in order to effectuate the polymerization of considerable rate. These cocatalysts include alkylene oxides, a-haloethers, benzotrichloride, ortho esters, acid chlorides and anhydrides, and hydrogen halides. The systems of LEWIS acids and these cocatalysts

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Author

Saegusa, Takeo ;Imai, Hirosuke ;Furukawa, Junji

Publisher

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

Published

1962

Language

EN

Field

Chemistry (Physical Sciences)