Table 4.
The Effect of Palladium Catalysts on the Cross-Coupling Reactions of Alkenyl Boronic Ester with Alkene under Base-Free Conditions
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---|---|---|---|
entry | catalyst | yield (%) |
|
2 | 3 | ||
1 | Pd(OAc)2 | 95 | - |
2 | PdCl2 | 21 | - |
3 | Pd2(dba)3 | No reaction | |
4 | Pd(PPh3)4 | 46 | 51 |