Abstract
The tertiary carbenium ions 2 + and 3 + , models of the propagating species in carbocationic isobutylene polymerization, are generated from the tertiary chlorides 2c and 3c with a Lewis acid in the presence of isobutylene (1c) and one of the allylsilanes 1a or 1b, which act as terminators. Since the rate of the termination reaction is known, the ratio of the telomerization products can be evaluated to give a propagation rate constant of (6 ± 2) x 10 8 L mol -1 s -1 (independent of temperature) for the carbocationic oligomerization of isobutylene in dichloromethane.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.