Table 2. Photodetosylation Optimization and Control Reactions^a.

entry	equiv of DHP I	equiv of Cs2CO3	time (h)	yield of 11b (%)
1	1.0	5.0	18	72
2	1.2	5.0	18	81
3	1.5	5.0	18	83
4	1.2	4.0	18	99
5	1.2	0	18	c
6	1.2	4.0	18	c,d
7	1.2	4.0	8	89
8	1.2	4.0	12	97

^aTs: tosyl.

^bYields calculated by ¹H NMR using 1,3,5-trimethoxybenzene as an external standard.

^cNo reaction.

^dNo light.