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. Author manuscript; available in PMC: 2011 Jul 24.
Published in final edited form as: Tetrahedron. 2010 Jul 24;66(30):5720–5726. doi: 10.1016/j.tet.2010.05.063

Table 3.

Kinetic rate data for the Ce(IV)-mediated oxidation of 1-phenyl-1,3-butanedione and ethylbenzoylacetatea

Entry Substrate Intermediate Oxidant Solvent Rate constant of
Ce(IV) decay at 380
nm
k1 (sec− 1)b 		Rate constant of
radical cation
formation at 460 nm
k2 (sec−1)b 		Rate constant of
radical cation decay
at 460 nm
k3 (sec−1)b
1 1 graphic file with name nihms209633t11.jpg CAN MeOH 5.8 ± 0.6 × 102 6.0 ± 0.2 × 102 4.1 ± 0.1 × 10−2
MeCN 8.3 ± 0.2 8.7 ± 0.1 5.8 ± 0.2 × 10−3
CTAN MeCN 6.0 ± 0.3 6.2 ± 0.1 5.1 ± 0.5 × 10−3
CH2Cl2 3.4 ± 0.3 3.4 ± 0.1 1.7 ± 0.1 × 10−3
2 3 graphic file with name nihms209633t12.jpg CAN MeOH 3.5 ± 0.3 × 102 3.7 ± 0.2 × 102 3.2 ± 0.1 × 10−1
MeCN 6.2 ± 0.1 6.3 ± 0.1 9.0 ± 0.3 × 10−2
CTAN MeCN 3.8 ± 0.4 3.9 ± 0.1 8.8 ± 0.2 × 10−2
CH2Cl2 1.4 ± 0.1 1.6 ± 0.1 1.5 ± 0.1 × 10−2
a

[Ce(IV)]=1 mM, [substrate]=20 mM at 25°C.

b

Average of at least two runs.