Table 1.

Evaluation of Conditions for the Oxidation of Model Ketone 1b^a

entry	%Pd(OBz)2	%DAFO	%BQ	yield (%)	unreacted 1b (%)
1	0	10	0	0	quant
2	10	0	0	0	22
3	10	10	0	59	0
4b	10	10	0	58	0
5	20	20	0	55	0
6	10	20	0	51	21
7	10	10	10	74	0
8	10	10	50	78	0
9c	10	10	10	79	0

^aConditions: Reactions were conducted with 0.1 mmol (1 equiv) of 1b and 2.0 equiv of BzO₂tBu. The ligand, 4,5-diazafluoren-9-one, is abbreviated as DAFO. Benzoquinone is abbreviated as BQ. The reaction duration was 20 h. Yields were determined by ¹H NMR.

^bReaction was conducted with 4.0 equiv of BzO₂tBu.

^cAverage yield of two reactions; reaction duration was 10 h.