Table 2.

One-pot reaction for the synthesis of compound 7.

entry	Ar1	Ar2	R1	product	yield (%)b
1	2-thiophenyl	3-OMe-4-FC6H3	CO2Et	7a	66
2	2-thiophenyl	2-furanyl	CO2Et	7b	51
3	2-thiophenyl	3-pyridinyl	CO2Et	7c	43
4	2-FC6H4	4-ClC6H4	CO2Et	7d	72
5	4-BrC6H4	4-ClC6H4	CO2Et	7e	66
6	4-BrC6H4	Ph	COMe	7f	trace
7	4-BrC6H4	Ph	Ph	7g	–
8	4-BrC6H4	CO2Et	CO2Et	7h	messy
9	4-BrC6H4	ethyl	CO2Et	7i	messy

^aIsolated yield. Reaction conditions are same as Table 1, entry 5.