Table 1.

Optimization of Amination Conditions^a

(3)
entry	catalyst	R1	R2	yield (%)b
1	A, B, C, or D	CO2Et	CO2Et (2a)	0
2	A	Ph	Ph (2b)	26
3	B	Ph	Ph (2b)	29
4	C	Ph	Ph (2b)	18
5	D	Ph	Ph (2b)	28
6	C	Ph	SO2Ph (2c)	16
7	D	Ph	SO2Ph (2c)	16
8	A or B	Ph	COPh (2d)	0
9	C	Ph	COPh (2d)	42
10	D	Ph	COPh (2d)	49
11c	D	Ph	COPh (2d)	63
12d	D	Ph	COPh (2d)	54

^a20 mol % DBU and 3 equiv of 2, 23 °C.

^bIsolated yields.

^c30 mol % DBU, 3 equiv of 2, and 4 Å molecular sieves, 0 °C.

^d30 mol % DBU, 2 equiv of 2, and 4 Å molecular sieves, 0 °C.