Table 2. GC Yields [%]^a in Suzuki–Miyaura and Heck Cross-Coupling Reactions Catalyzed by Pd(II) Complexes Based on Ligands L1–L12.

		GC yield [%] in Suzuki–Miyaura couplingb			GC yield [%] in Heck couplingc
	pKa of L	PdL2Cl2 (1a–12a)	PdL2(NO3)2 (1b–12b)	PdL4(NO3)2 (1c–12c)	PdL2Cl2 (1a–12a)	PdL2(NO3)2 (1b–12b)	PdL4(NO3)2 (1c–12c)
L1	5.23	97	93	95	85	88	90
L2	5.98	93	92	98	90	91	94
L3	6.47	93	91	91	86	82	76
L4	3.49	78	72	64	89	92	79
L5	3.57	86	87	88	80	92	75
L6	9.61	93		90	86		83
L7	3.83	82	74	75	90	92	80
L8	2.10	88	66		91	93
L9	2.46	87	70		81	91
L10	3.07	98		90	93		88
L11	3.12	86		79	88		90
L12	2.86	83		92	92		77

^aReaction yields were determined by GC–MS measurement of 4′-bromoacetophenone or iodobenzene decay as the average of three results.

^bReaction conditions: 4′-bromoacetophenone (0.2 mmol, 1 equiv), phenylboronic acid (0.24 mmol, 1.2 equiv), K₃PO₄ (0.4 mmol, 2 equiv), and Pd(II) complex (0.1 mol %) were stirred in toluene (2 mL) at 80 °C for 2 h.

^cReaction conditions: iodobenzene (0.2 mmol, 1 equiv), styrene (0.24 mmol, 1.2 equiv), Et₃N (1.0 mmol, 5 equiv), and Pd(II) complex (0.1 mol %) were stirred in DMSO (2 mL) at 120 °C for 2 h.