Superacids and Their Derivatives. IV. Kinetic Studies on the Ring-Opening Polymerization of Tetrahydrofuran Initiated with Ethyl Trifluoromethanesulfonate by Means of19F and1H Nuclear Magnetic Resonance Spectroscopy. Evidence for the Oxonium-Ester Equilibrium of the Propagating Species

1974 ◽  
Vol 7 (4) ◽  
pp. 415-420 ◽  
Author(s):  
Shiro Kobayashi ◽  
Hidenori Danda ◽  
Takeo Saegusa
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