Table 2. Application scope of the asymmetric epoxidation using amide 6C .

Entry	R	Ald.	Prod.	Cond. a	Yield b [%]	dr c [%]
1	Ph	2a	17a	A	78	>98
2				B	73	>98
3	4-MeC6H4–	2b	17b	A	80	>98
4	2-MeC6H4–	2c	17c	A	79	>98
5	4-ClC6H4–	2d	17d	A	75	>98
6	4-BrC6H4–	2e	17e	A	85	>98
7	4-PhC6H4–	2f	17f	A	89	>98
8	4-MeOC6H4–	2g	17g	A	73	>98
9	4-Me2NC6H4–	2h	17h	B	(60) d	>98
10	4-CNC6H4–	2i	17i	C	62	>98
11	3-NO2C6H4–	2j	17j	C	68	>98
12	n-Decyl–	2k	17k	D	42	>98
13	Cyclohexyl–	2l	17l	D	39	>98

^aA: i-PrOH, 25 °C, 24 h, Cs₂CO₃ (s, 20 eq.); B: toluene, 60 °C, 24 h, Cs₂CO₃ (s, 20 eq.); C: toluene, 25 °C, 72 h, Cs₂CO₃ (s, 20 eq.); D: toluene, 25 °C, 24 h, Cs₂CO₃ (s, 20 eq.).

^bIsolated yield.

^cDetermined by ¹H NMR of the crude reaction mixture.

^dFull decomposition on silica gel, crude NMR yield given in brackets.