Table 1.

Substrate Generality for the One-pot Tandem Epoxidation/Rearrangement Reaction.^[a]

Entry	3	2, Ar	7	yield (%)[b]
1	3-Me	4-NO2C6H4	7a	95
2	3-Me	3-NO2C6H4	7b	95
3	3-Me	2-NO2C6H4	7c	95
4	3-Me	C6H5	7d	82
5	3-Me	4-CF3C6H4	7e	95
6	3-Me	4-BrC6H4	7f	90
7	3-Me	4-ClC6H4	7g	88
8	3-Me	4-FC6H4	7h	90
9	3-Me	4-MeC6H4	7i	81
10	3-Bn	4-NO2C6H4	7j	95
11	3-Bn	2-NO2C6H4	7k	95
12	3-Bn	C6H5	7l	85
13	Me3-Me	4-NO2C6H4	7m	95[c]

^[a]The reaction was carried out with 3 (0.36 mmol), aldehyde (0.30 mmol), Rh₂(OAc)₄ (2 mol%), Cu(hfacac)₂ (5 mol%), respective solvent (2 mL).

^[b]Isolated yield of 7 after chromatography.

^[c]The ¹H NMR spectrum of the reaction mixture showed only one diasteroisomer, whose stereochemistry was confirmed by NOe analysis, see SI.