Entry	R₁	R₂	R₃	Product	Yield(%)^b
1	Ph	Ph	Ph	4a	96
2	Ph	p-ClPh	Ph	4b	92
3	Ph	p-BrPh	Ph	4c	94
4	Ph	p-CH₃Ph	Ph	4d	83
5	Ph	p-OCH₃Ph	Ph	4e	90
6	Ph	m-ClPh	Ph	4f	75
7	Ph	m-CH₃Ph	Ph	4g	67
8	p-FPh	Ph	Ph	4h	85
9	p-ClPh	Ph	Ph	4i	87
10	p-BrPh	Ph	Ph	4j	65
11	p-OCH₃Ph	Ph	Ph	4k	88
12	p-OCH₃Ph	CH₃	Ph	4l	92
13	Ph	Ph	p-ClPh	4m	99
14	Ph	Ph	p-BrPh	4n	98
15	Ph	Ph	p-OCH₃Ph	4o	78
16	Ph	Ph	o-ClPh	4p	86
17	Ph	Ph	o-CH₃Ph	4q	85