Cationic indium catalysts for ring opening polymerization: tuning reactivity with hemilabile ligands.

Chemical Science
Chatura GoonesingheParisa Mehrkhodavandi

Abstract

This is a comprehensive study of the effects of rationally designed hemilabile ligands on the stability, reactivity, and change in catalytic behavior of indium complexes. We report cationic alkyl indium complexes supported by a family of hemi-salen type ligands bearing hemilabile thiophenyl (2a), furfuryl (2b) and pyridyl (2c) pendant donor arms. Shelf-life and stability of these complexes followed the trend 2a < 2b < 2c, showing direct correlation to the affinity of the pendant donor group to the indium center. Reactivity towards polymerization of epichlorohydrin and cyclohexene oxide followed the trend 2a > 2b > 2c with control of polymerization following an inverse relationship to reactivity. Surprisingly, 2c polymerized racemic lactide without an external initiator, likely through an alkyl-initiated coordination-insertion mechanism.

References

Mar 10, 2001·Angewandte Chemie·Pierre Braunstein, Frédéric Naud
Apr 28, 2007·Accounts of Chemical Research·Zhiqiang WengT S Andy Hor
Aug 1, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Gregory C WelchDouglas W Stephan
Feb 15, 2008·Angewandte Chemie·Amy F DouglasParisa Mehrkhodavandi
Aug 30, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Meghan A Dureen, Douglas W Stephan
Jun 25, 2010·Chemical Communications : Chem Comm·M Victoria JiménezLuis A Oro
Apr 7, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Kimberly M OstenParisa Mehrkhodavandi
Jun 7, 2012·Chemical Communications : Chem Comm·Cuiling XuParisa Mehrkhodavandi
Jun 26, 2012·Chemical Communications : Chem Comm·Dinesh C AluthgeParisa Mehrkhodavandi
Jul 7, 2012·Journal of the American Chemical Society·Insun YuParisa Mehrkhodavandi
Jul 25, 2013·The Journal of Organic Chemistry·Kate E Horner, Peter B Karadakov
Jun 11, 2014·Inorganic Chemistry·Dinesh C AluthgeParisa Mehrkhodavandi
Feb 18, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Hart PlommerFrancesca M Kerton
Mar 3, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·K M OstenP Mehrkhodavandi
Apr 22, 2015·Chemical Reviews·Yann Sarazin, Jean-François Carpentier
Jul 21, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·I YuP Mehrkhodavandi
May 11, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·L-E ChileP Mehrkhodavandi
Nov 1, 2017·Accounts of Chemical Research·Kimberly M Osten, Parisa Mehrkhodavandi
Jan 19, 2018·Journal of the American Chemical Society·Carolyn S HigmanDeryn E Fogg
May 22, 2018·Journal of the American Chemical Society·Arnaud ThevenonCharlotte K Williams
Oct 27, 2018·Journal of the American Chemical Society·Ho Fung ChengChad A Mirkin
Mar 1, 2019·Chemical Communications : Chem Comm·Carlos DiazParisa Mehrkhodavandi
Sep 13, 2019·Journal of the American Chemical Society·Amela ArnoldLouise A Berben
Sep 15, 2019·Journal of the American Chemical Society·Keita TanakaJin-Quan Yu

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Citations

Mar 31, 2021·Journal of the American Chemical Society·Md Emdadul HoqueBuddhadeb Chattopadhyay
Oct 8, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Samya BanerjeeHerbert W Roesky
Dec 7, 2021·Inorganic Chemistry·Hassan A BaalbakiParisa Mehrkhodavandi

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Methods Mentioned

BETA
X-ray
NMR

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