Controllable ROMP Tacticity by Harnessing the Fluxionality of Stereogenic-at-Ruthenium Complexes.
作者： Malte S. Mikus , Sebastian Torker , Amir H. Hoveyda
关键词: Ruthenium 、 Polymer chemistry 、 Ring-opening metathesis polymerisation 、 Isomerization 、 Monomer 、 Tacticity 、 Polymerization 、 Metathesis 、 Chemistry 、 ROMP
摘要: Readily accessible and easy-to-handle Ru complexes capable of generating all-Z polynorbornene polynorbornadiene by ring-opening metathesis polymerization (ROMP) with controllable selectivity, ranging from ≈50 to ≥95 % syndiotactic, are introduced. It is demonstrated that the rate non-metathesis based polytopal isomerization levels syndiotacticity may be fine-tuned adjustment monomer concentration catalyst's steric electronic characteristics.
sci-hub.se 参考文章(56)
Christian Slugovc, Industrial Applications of Olefin Metathesis Polymerization Olefin Metathesis. pp. 329- 333 ,(2014) , 10.1002/9781118711613.CH10
Richard R. Schrock, Synthesis of stereoregular ROMP polymers using molybdenum and tungsten imido alkylidene initiators. Dalton Transactions. ,vol. 40, pp. 7484- 7495 ,(2011) , 10.1039/C1DT10215J
Joshua J. Van Veldhuizen, Steven B. Garber, Jason S. Kingsbury, Amir H. Hoveyda, A Recyclable Chiral Ru Catalyst for Enantioselective Olefin Metathesis. Efficient Catalytic Asymmetric Ring-Opening/Cross Metathesis in Air Journal of the American Chemical Society. ,vol. 124, pp. 4954- 4955 ,(2002) , 10.1021/JA020259C
Wei Zhao, Yang Wang, Xinli Liu, Xuesi Chen, Dongmei Cui, Eugene Y.-X. Chen, Protic compound mediated living cross-chain-transfer polymerization of rac-lactide: synthesis of isotactic (crystalline)–heterotactic (amorphous) stereomultiblock polylactide Chemical Communications. ,vol. 48, pp. 6375- 6377 ,(2012) , 10.1039/C2CC32680A
Yu Miura, Takuya Shibata, Kotaro Satoh, Masami Kamigaito, Yoshio Okamoto, Stereogradient Polymers by Ruthenium-Catalyzed Stereospecific Living Radical Copolymerization of Two Monomers with Different Stereospecificities and Reactivities Journal of the American Chemical Society. ,vol. 128, pp. 16026- 16027 ,(2006) , 10.1021/JA067587N
Lauren E. Rosebrugh, Vanessa M. Marx, Benjamin K. Keitz, Robert H. Grubbs, Synthesis of Highly Cis, Syndiotactic Polymers via Ring-Opening Metathesis Polymerization Using Ruthenium Metathesis Catalysts Journal of the American Chemical Society. ,vol. 135, pp. 10032- 10035 ,(2013) , 10.1021/JA405559Y
Margaret M. Flook, Annie J. Jiang, Richard R. Schrock, Peter Müller, Amir H. Hoveyda, Z-selective olefin metathesis processes catalyzed by a molybdenum hexaisopropylterphenoxide monopyrrolide complex. Journal of the American Chemical Society. ,vol. 131, pp. 7962- 7963 ,(2009) , 10.1021/JA902738U
Benjamin K. Keitz, Alexey Fedorov, Robert H. Grubbs, Cis-selective ring-opening metathesis polymerization with ruthenium catalysts. Journal of the American Chemical Society. ,vol. 134, pp. 2040- 2043 ,(2012) , 10.1021/JA211676Y
Ming Joo Koh, R. Kashif M. Khan, Sebastian Torker, Miao Yu, Malte S. Mikus, Amir H. Hoveyda, High-value alcohols and higher-oxidation-state compounds by catalytic Z -selective cross-metathesis Nature. ,vol. 517, pp. 181- 186 ,(2015) , 10.1038/NATURE14061
Margaret M. Flook, Janna Börner, Stefan M. Kilyanek, Laura C. H. Gerber, Richard R. Schrock, Five-Coordinate Rearrangements of Metallacyclobutane Intermediates during Ring-Opening Metathesis Polymerization of 2,3-Dicarboalkoxynorbornenes by Molybdenum and Tungsten Monoalkoxide Pyrrolide Initiators Organometallics. ,vol. 31, pp. 6231- 6243 ,(2012) , 10.1021/OM300530P