Stereospecific Styrene Enchainment at a Titanium Site within a Helical Ligand Framework: Evidence for the Formation of Homochiral Polystyrene

Tactful: Titanium catalyst precursors in both optically active, enantiomeric forms have been obtained diastereoselectively, and after activation with methylaluminoxane (MAO) they were used for the stereospecific oligomerization of styrene. The isotactic polystyrenes with a degree of polymerization o...

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Published in:Angewandte Chemie International Edition 2007-01, Vol.46 (25), p.4790-4793
Main Authors: Beckerle, Klaus, Manivannan, Ramanujachary, Lian, Bing, Meppelder, Geert-Jan M., Raabe, Gerhard, Spaniol, Thomas P., Ebeling, Henner, Pelascini, Frederic, Mülhaupt, Rolf, Okuda, Jun
Format: Article
Language:English
Subjects:
asymmetric catalysis
chirality
Ligands
Magnetic Resonance Spectroscopy
Nanotechnology
polymerization
Polystyrenes - chemistry
Stereoisomerism
tacticity
titanium
Titanium - chemistry
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cited_by cdi_FETCH-LOGICAL-c4473-e9a7baae30d43f6f5cf7316ebffe3e2c07dd5f3ccc43108300f5f2a2aea43ee23
cites cdi_FETCH-LOGICAL-c4473-e9a7baae30d43f6f5cf7316ebffe3e2c07dd5f3ccc43108300f5f2a2aea43ee23
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container_title Angewandte Chemie International Edition
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creator Beckerle, Klaus
Manivannan, Ramanujachary
Lian, Bing
Meppelder, Geert-Jan M.
Raabe, Gerhard
Spaniol, Thomas P.
Ebeling, Henner
Pelascini, Frederic
Mülhaupt, Rolf
Okuda, Jun
description Tactful: Titanium catalyst precursors in both optically active, enantiomeric forms have been obtained diastereoselectively, and after activation with methylaluminoxane (MAO) they were used for the stereospecific oligomerization of styrene. The isotactic polystyrenes with a degree of polymerization of up to 45 show measurable optical activity, thus corroborating that enantiomorphic site control is operating in these homogeneous catalysts.
doi_str_mv 10.1002/anie.200700783
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subjects asymmetric catalysis
chirality
Ligands
Magnetic Resonance Spectroscopy
Nanotechnology
polymerization
Polystyrenes - chemistry
Stereoisomerism
tacticity
titanium
Titanium - chemistry
title Stereospecific Styrene Enchainment at a Titanium Site within a Helical Ligand Framework: Evidence for the Formation of Homochiral Polystyrene
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