Table 1.
Entry | Reactant | Reaction Conditions | x | Time/Temp (°C) | Yield a (%) |
---|---|---|---|---|---|
1 | 2a | Pd(PPh3)4/Na2CO3 | 2 | 40 min/120 | 60 |
2 | 1a | Pd(PPh3)4/Na2CO3 | 2 | 40 min/120 | 75 |
3 | 1a | Pd(OAc)2/XantPhos, K3PO4 | 2 | 40 min/120 | 20 |
4 | 1a | Pd(OAc)2, Na2CO3 | 2 | 40 min/120 | 34 |
5 | 1a | Pd(PPh3)2Cl2/PPh3, Na2CO3 | 2 | 40 min/120 | 50 |
6 | 1a | NiCl2(dppe)/dppe, K3PO4 | 2 | 40 min/120 | 20 |
7 | 1a | Pd(PPh3)4/Na2CO3 | 1 | 40 min/120 | 48 |
8 | 1a | Pd(PPh3)4/Na2CO3 | 3 | 40 min/120 | 59 |
9 | 1a | Pd(PPh3)4/Na2CO3 | 2 | 40 min/180 | 68 |
10 | 1a | Pd(PPh3)4/Na2CO3 | 2 | 60 min/120 | 34 |
Reaction conditions: 5 mol % of catalyst, aqueous base, 1,4-dioxane, µW. a Yield corresponding to the purified products.