The results of synthesizing 3a–3gvia the irradiation of 2a–2g in HCl/DMF at 365 nm.

En.	Starting	Conv. (%)	Yield (%) based on conversion	Yield of 3 (%)	3-Step yield (%)
1	2a: H	82	97	79.54	72.47
2	2b: Me	61	95	57.95	51.15
3	2c: Et	65	98	63.7	54.99
4	2d: i-Pr	74	98	72.52	62.72
5	2e: F	72	98	70.56	60.29
6	2f: Cl	76	97	73.72	65.74
7	2g: Br	77	96	73.92	68.06