Substrate scope of 1 and synthesis of target molecules 3^a.

Entry	1	Ar	3	Temp. (°C)	Yieldb (%)
1	1a	Ph	3a	Reflux	88
2	1b	4-ClC6H4	3b	Reflux	95
3	1c	4-MeOC6H4	3c	Reflux	85
4	1d	2-ClC6H4	3d	Reflux	88
5	1e	2,4-Me2C6H3	3e	Reflux	91
6	1f	4-MeC6H4	3f	Reflux	85
7	1g	2-MeOC6H4	3g	Reflux	87
8	1h	2-MeC6H4	4h	Reflux	85

^aAll reactions were carried out with 1 (1.0 mmol), 2 (1.1 mmol), Et₃N (1.0 equiv.), in CH₂Cl₂ (5.0 mL) at reflux for 6 hours.

^bIsolated yield.