Issue 8, 2012
From the journal:

Chemical Communications

The first facile stereoselectivity switch in the polymerization of rac-lactide—from heteroselective to isoselective dialkylgallium alkoxides with the help of N-heterocyclic carbenes†

Paweł Horeglad,*a   Grzegorz Szczepaniak,a   Maciej Drankab  and  Janusz Zacharab  

* Corresponding authors

a Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
E-mail: horeglad@chem.uw.edu.pl
Tel: +48 228220211 ext. 462

b Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
E-mail: janzac@ch.pw.edu.pl

Abstract

The reaction of N-heterocyclic carbene (NHC) with dimeric dialkylgallium alkoxides, acting as nonselective or heteroselective catalysts in the polymerization of rac-LA, leads to highly active and isoselective monomeric Me2Ga(NHC)OR catalysts, resulting for the first time in the facile switch of stereoselectivity.

Graphical abstract: The first facile stereoselectivity switch in the polymerization of rac-lactide—from heteroselective to isoselective dialkylgallium alkoxides with the help of N-heterocyclic carbenes

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Article information

DOI
https://doi.org/10.1039/C2CC16072B
Article type
Communication
Submitted
29 Sep 2011
Accepted
25 Nov 2011
First published
12 Dec 2011

Chem. Commun., 2012,48, 1171-1173

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The first facile stereoselectivity switch in the polymerization of rac-lactide—from heteroselective to isoselective dialkylgallium alkoxides with the help of N-heterocyclic carbenes

P. Horeglad, G. Szczepaniak, M. Dranka and J. Zachara, Chem. Commun., 2012, 48, 1171 DOI: 10.1039/C2CC16072B

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