Table 2.
Pd(0)-catalyzed C-arylation of substrates 12 and 14.a
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entry | SM | product | yieldb (%) |
1 | 12a | n = 0, R1 = Me, R2 = H | 13a (83) |
2 | 12b | n = 0, R1 = Et, R2 = H | 13b (77) |
3 | 14a | n = 1, R1 = Me, R2 = H | 15a (85) |
4 | 14b | n = 1, R1 = Me, R2 = OMe | 15b (56) |
5 | 14c | n = 1, R1 = Bn, R2 = H | 15c (95) |
Isolated yields
conditions: substrate (1.0 mmol), Pd(OAc)2 (0.1 mmol; 10.0 mol %), PPh3 (0.2 mmol), Cs2CO3 (2.0 mmol) in toluene (4.0 mL) at 110 °C in sealed tube for 12–24 h.