Unravelling the Mechanism of Force-Induced Ring-Opening of Benzocyclobutenes
β Scribed by Jordi Ribas-Arino; Motoyuki Shiga; Dominik Marx
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 425 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0947-6539
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π SIMILAR VOLUMES
From experimental data, a conclusion is drawn on chain character of cyclo-olefin ring-opening polymerization. It was suggested that the active centres of this process are carbene complexes of transition metals (W, Mo, Re). The confirmation of this view comes from studies on the initiation of ring-op
To obtain more insight in the ring-opening polymerization of lactones, complex formation of the initiators tetraphenyltin, stannous octoate, tin tetrachloride, aluminium bromide and triisobutylaluminium (TIBA), and the monomers L(-)-lactide, D,e-lactide and glycolide was studied by i.r.-spectroscopy
## Abstract Orbital mapping analysis based on CNDO/2 molecular orbitals has been used to survey the thermal ringβopening isomerizations of cyclobutenes and benzocyclobutenes. Isoelectronic substitutions within the molecular framework of cyclobutene (e.g., CH~2~ replaced by CH^β^, OH^+^, NH, NH~2~^+