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Issue 6, 2012
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Organo-catalyzed synthesis of aliphatic polycarbonates in solvent-free conditions

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Abstract

A new efficient and expeditious route to the synthesis of aliphatic polycarbonates, in solvent-free conditions and using 1-n-butyl-3-methylimidazolium-2-carboxylate (BMIM-2-CO2) as a catalyst precursor, is described. The protocol consists of a two-step polymerization process involving the transesterification of dimethyl carbonate (DMC) with linear alkane diols and leading to high molecular weight homopolymers. The reaction went to completion quantitatively with the liberation of methanol as the only by-product. The in situ formation of N-heterocyclic carbene species resulting from BMIM-2-CO2 decarboxylation is suggested to be a key feature of the condensation process. The protocol was then applied to the copolymerization of diverse diols leading to the synthesis of polycarbonates with average segment lengths and random sequences.

Graphical abstract: Organo-catalyzed synthesis of aliphatic polycarbonates in solvent-free conditions

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Publication details

The article was received on 03 Feb 2012, accepted on 07 Mar 2012, published on 11 Apr 2012 and first published online on 11 Apr 2012


Article type: Paper
DOI: 10.1039/C2PY20056B
Citation: Polym. Chem., 2012,3, 1475-1480
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    Organo-catalyzed synthesis of aliphatic polycarbonates in solvent-free conditions

    P. U. Naik, K. Refes, F. Sadaka, C. Brachais, G. Boni, J. Couvercelle, M. Picquet and L. Plasseraud, Polym. Chem., 2012, 3, 1475
    DOI: 10.1039/C2PY20056B

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