Catalytic Potential of Mononuclear Cr(III)-Imine Complexes for Selective Oxidation of Benzyl Alcohol by Aqueous H<sub>2</sub>O<sub>2</sub>: Table 5

Table 5: Oxidation of benzyl alcohol catalyzed by CrLA2 using an aqueous H₂O₂ in acetonitrile.


Entry^a	Temp (°C)	Time (h)	Yield (%)^b				Conversion (%)	Selectivity (%)	TON^d	TOF^e
			BA^b	BZ^c	Side products	R^a

1	60	1	25	—	—	75	25	100	12.5	12.5
2		2	29	—	—	71	29	100	14.5	7.25
3		4	34	—	—	66	34	100	17	4.25
4		6	22	14	—	64	36	61	11	1.83
5	70	1	39	—	—	61	39	100	19.5	19.5
6		2	44	—	—	56	44	100	22	11
7		4	49	1	—	50	54	91	24.5	6.13
8		6	41	13	—	46	50	82	20.5	3.42
9	80	1	53	—	—	47	58	100	26.5	26.5
10		2	70	—	—	30	77	100	35	17.5
11		4	85	—	—	15	85	100	42.5	10.63
12		6	69	21	—	10	81	85	34.5	5.75
13	90	1	41	21	—	38	62	66	20.5	20.5
14		2	34	25	9	32	68	51	17	8.5
15		4	25	29	17	29	71	35	12.2	3.13
16		6	22	33	19	26	74	30	11	1.83
17	100	1	29	31	7	33	67	43	14.5	14.5
18		2	21	40	15	24	76	28	10.5	5.25
19		4	16	51	19	14	86	19	8	2
20		6	13	57	23	7	93	14	6.5	1.08

^aThe oxidation of benzyl alcohol (R) (1.0 mmol) catalyzed by complex CrLA2 (0.02 mmol) with aqueous H₂O₂ (3.00 mL) in 10 mL acetonitrile for 1–6 h. ^bThe yield based on GC results, selectivity percentage of the target oxide product BA and the other product BZ. ^cThe other side products are mainly of BZ. ^dTON (turnover number) = ratio of moles of product (here oxide) obtained to the moles of catalyst. ^eThe corresponding TOF (turnover frequency) (TON/h) are shown in parentheses (mol (mol catalyst)⁻¹ h⁻¹).