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. Author manuscript; available in PMC: 2014 Aug 2.
Published in final edited form as: Org Lett. 2013 Jul 24;15(15):3998–4001. doi: 10.1021/ol401796v

Table 1.

Ligand Screen for the Pd-Catalyzed Arylation of MeOHa

graphic file with name nihms-509691-t0006.jpg

entry ligand temp
(°C)
conv
(%)b
yield of
1 (%)b
yield of
2 (%)b
1 L1 100 100 93 7
2 L2 100 100 92 7
3 L3 100 100 93 7
4 L4 100 53 13 40
5 L5 100 100 73 27
6 L6 100 27 20 7
7 L2 80 100 96 4
8c L2 80 94 85 7
9d L2 80 100 93 7
10d L2 50 100 94 6
11d L2 rt 50 48 2
12e L2 rt 100 95 5
a

Reaction conditions: 4-Chloroanisole (0.25 mmol), MeOH (1.25 mmol), NaOtBu (0.35 mmol), Pd2dba3 (1 mol %), ligand (4 mol %), 1,4-dioxane (0.5 mL, 0.50 M), 20 h.

b

Determined by GC.

c

Pd2dba3 (0.5 mol %), L2 (2 mol %), 24 h.

d

3 (1 mol %), L2 (1 mol %).

e

3 (2 mol %),L2 (2 mol %).

graphic file with name nihms-509691-t0007.jpg