Table 2. Synthesis of 3,4-Diaryl-3-pyrrolin-2-ones.

entry	substrate	producta	yieldb (%)
1	11b	14bb	84
2	11c	14cc	45c
3	13c	14cc	25c
4	13c	14dc	72c
5	11d	14dd	96
6	12c	15ac	39
7	12d	15ad	74
8	12b	15bb	55
9	12c	15bc	61c
10	12d	15bd	49
11	12b	15cb	44c
12	12c	15ccd	NRe
13	12d	15cd	45
14	12b	15db	69
15	12c	15dc	25
16	12d	15dd	80
17	12b	15eb	57
18	12c	15ec	59
19	12d	15ed	49

^aThe product number is comprised first of the letter for Ar⁴ and second of letter for Ar³; 15ac: Ar⁴ = phenyl and Ar³ = 3-methoxyphenyl.

^bYield refers to isolated yields of pure products after column chromatography.

^cReaction conditions: Ar⁴–B(OH)₂, Pd(dppf)Cl₂, Cs₂CO₃, THF.

^d15cc was obtained by treatment of 14cc with TFA.

^eNR = not run.