Table 2. Reaction with benzyl diethyl phosphate, a less reactive electrophile ^a .

Entry	Co(Pc) (mol %)	T (°C)	Yield b
1	3	rt	ND c
2	3	40	ND c
3	1	80	3 c , d
4	3	80	36 c , d
5	6	80	(70) d

^aReactions run at 0.25 M in DMA using pre-formed 6 for 15–22 h. See ESI.

^bYield of 3a′ from GC area% data. Yields in parentheses are isolated yields of purified product.

^cSignificant amounts of starting materials remain.

^dOnly byproduct observed by GC analysis was small amounts of benzene from hydrodehalogenation of Ph-Br.