Abstract

Heating norbornene in the presence of catalytic amounts of dimethyltitanocene, cyclopentadienyltrimethyltitanium(IV), chlorodimethylcyclopentadienyltitanium(IV), and bis[(trimethylsilyl)methyl]titanocene resulted in the ring-opening metathesis polymerization of norbornene. Presumably, the in-situ generation of free or complexed titanium alkylidene intermediates is responsible for these polymerizations. The use of tetrahydrofuran as the solvent had a significant inhibitory effect that varied with the initiator used. This effect was confirmed with the measurement of kinetic data. This substituent-dependent solvent effect was attributed to changes in the relative contributions of nucleophilic and neutral resonance structures, in agreement with recent theoretical calculations

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

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.