Table 1. Hydrodechlorination Optimization and Control Reactions.

entry	DHP	[MeCN] (mM)	base	yield of 2a (%)
1	I, 1.0 equiv	50	Cs2CO3	60
2	I, 1.2 equiv	50	Cs2CO3	69
3	I, 1.5 equiv	50	Cs2CO3	75
4	I, 1.5 equiv	62.5	Cs2CO3	78b
5	I, 1.5 equiv	62.5	none	c
6	I, 1.5 equiv	62.5	Cs2CO3	c,d
7	II, 1.5 equiv	62.5	tBuOKe	22

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

^bIsolated yield.

^cNo reaction.

^dNo light.

^e2.2 equiv.