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. 2014 Dec 10;137(1):490–498. doi: 10.1021/ja5116452

Table 3. Azobenzene Substrate Scopea,b.

graphic file with name ja-2014-116452_0010.jpg

a

Co(III) conditions: 2a (0.20 mmol), azobenzene 1 (0.40 mmol), 5 (10 mol %), and AcOH (10 mol %) in 1,4-dioxane (2.0 M) at 100 °C for 24 h.

b

Isolated yields after silica gel chromatography.

c

Co(III) in situ conditions:2a (0.20 mmol), azobenzene 1 (0.40 mmol), [Cp*CoCl2]2 (5 mol % of Co dimer), AgB(C6F5)4 (25 mol %), and AgOAc (20 mol %) in 1,4-dioxane (2.0 M) at 130 °C for 24 h.

d

Ratio of fully separable regioisomers.

e

Rh(III) conditions: azobenzene 1 (0.20 mmol), 2a (0.40 mmol), [Cp*RhCl2]2 (5 mol % of Rh dimer), AgSbF6 (20 mol %), and MgSO4 (100 mg) in tetrahydrofuran (0.2 M) at 110 °C for 24 h.

f

Reaction was conducted in 1,4-dioxane (0.2 M).

g

Reaction was conducted in 1,4-dioxane (1.0 M).