Table 3.
| |
---|---|
entry | product yield(%)b/conversion(%)c |
1 |
7a, 92/100 |
2 |
7b, 33/76 |
3 |
7c, 15b/16 |
4 |
7d, 63/100 |
5d |
7e, 53/80 |
6 |
7f, 42/100 |
7 |
7g, 76/100 |
8 |
7h, 47/68 |
9 |
7i, 42/60 |
10 |
7j, 0/0 |
Reaction conditions: 1.0 equiv of aryl sulfamate, 1.05 equiv of trifluoroborate, 4 mol % XPhos-Pd-G2, 7 equiv of K2CO3, t-BuOH/H2O (1:1, 0.5 M), 85 °C, 18 h.
isolated yield.
calculated by 1H NMR with 30 μL of CH2Cl2.
5 equiv of K2CO3.