. 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 4.

Observed rate constants for the decay of the radical cation of 2,2-dideuterio-1-phenyl-1,3-butanedione in MeOH, MeCN, and CH₂Cl₂^a

Entry	Oxidant/ Solvent	k_D (sec^{− 1})^b	k_H/k_D
1	CAN/ MeOH	2.7 ± 0.1 × 10⁻²	1.5 ± 0.1
2	CAN/ MeCN	2.7 ± 0.1 × 10⁻³	2.2 ± 0.1
3	CTAN/ CH₂Cl₂	7.3 ± 0.1 × 10⁻⁴	2.4 ± 0.1

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

Average of at least two runs.