Table 2.

Scope of the phase-transfer catalyzed MIRC-reaction of 1c with different chalcones

Entry	Chalcone	Ar1	Ar2	Prod.	Yielda (%)	er b (+/−)
1	2	Ph	Ph	3c	82	13:87
2	7	4-ClC6H4	Ph	8	98	12:88
3	9	Ph	4-ClC6H4	10	91	11:89
4	11	Ph	4-FC6H4	12	72	13:87
5	13	3-NO2C6H4	Ph	14	59	9:91
6	15	4-NO2C6H4	Ph	16	58	10:90
7	17	Ph	4-MeC6H4	18	72	16:84
8	19	4-OH-C6H4	Ph	20	Nrc	Nd
9	21	Ph	4-OH-C6H4	22	Nrc	Nd
10	23	4-MeO-C6H4	Ph	24	Nrc	Nd
11	25	Ph	4-MeO-C6H4	26	Nrc	Nd

^aIsolated yield.

^bDetermined by HPLC using a chiral stationary phase.

^cOnly dimerization of 1c.