Table 1.

Optimization of reaction conditions.

entry	Az	Base	[M]	2	Yield (%)a,b
1	1	Cs2CO3	0.1	2a	29
2	2	Cs2CO3	0.1	2a	20
3	1	CsOAc	0.1	2a	32
4	1	K2CO3	0.1	2a	22
5	1	CsOAc	0.1	2b	48c
6	1	CsOAc	0.05	2b	48c
7	1	CsOAc	0.1	2b	68d
8	1	CsOAc	0.05	2b	97 (90)d
9	1	CsOAc	0.05	2b	tracee
10	1	CsOAc	0.05	2b	0f
11	-	CsOAc	0.05	2b	(30)
12	1	CsOAc	0.05	2b	0g

^[a]Reaction conditions unless otherwise stated: 1a (0.3 mmol), 2 (0.1 mmol), Az (0.015 mmol), base (0.2 mmol), styrene 3a (0.3 mmol), PC (5 μmol), and solvent (0.1 M) for 24 h.

^[b]1H NMR yield using 1,3,5-trimethoxybenzene as internal standard (0.33 equiv.) and yield of isolated product is given in parenthesis.

^[c]1a (0.3 mmol), 2 (0.2 mmol), 3a (0.1 mmol).

^[d]1a (0.3 mmol), 2 (0.5 mmol), 3a (0.1 mmol).

^[e]same conditions as [d] except benzoyl fluoride used as acyl starting material (0.3 mmol).

^[f]absence of PC-1.

^[g]no light.