Issue 14, 2002

13C Kinetic isotope effects in the copper(i)-mediated living radical polymerization of methyl methacrylate

Abstract

Carbon-13 kinetic isotope effects (KIEs) have been determined for free-radical and copper-mediated living radical polymerizations of methyl methacrylate at 60 °C. While free-radical polymerization shows only one primary 13C KIE, on the least-substituted double bond carbon (k12/k13 = 1.045), two significant KIEs are observed, one on each double bond carbon, for copper-mediated polymerization (k12/k13(H2C[double bond, length as m-dash]) = 1.050, k12/k13([double bond, length as m-dash]C<) = 1.010), showing that copper-mediated living radical polymerization does not propagate via a simple free radical process.

Graphical abstract: 13C Kinetic isotope effects in the copper(i)-mediated living radical polymerization of methyl methacrylate

Supplementary files

Article information

Article type
Communication
Submitted
16 Apr 2002
Accepted
24 May 2002
First published
07 Jun 2002

Chem. Commun., 2002, 1470-1471

13C Kinetic isotope effects in the copper(I)-mediated living radical polymerization of methyl methacrylate

S. Harrisson, J. P. Rourke and D. M. Haddleton, Chem. Commun., 2002, 1470 DOI: 10.1039/B203675D

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